{"title":"Best Sellers","description":"\u003cp\u003eOur most popular smoke and carbon monoxide detectors, based on recent sales.\u003c\/p\u003e","products":[{"product_id":"gs509a-photoelectric-smoke-detector","title":"GS509A 10-Year Product Life Photoelectric Smoke Detector","description":"\u003ch2\u003eGS509A: Photoelectric smoke detection for ceiling or wall mounting\u003c\/h2\u003e\n\u003cp\u003eThe SITERWELL GS509A is a standalone photoelectric smoke alarm with a mounting bracket for ceiling or wall installation, making it a practical choice for straightforward home installation. Its replaceable-battery design keeps routine maintenance accessible, with single and multipack options for planning your alarm locations.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhotoelectric smoke sensing:\u003c\/strong\u003e Detects smoke using an optical sensor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting bracket:\u003c\/strong\u003e Fixes to the ceiling or wall following the supplied instructions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaceable battery:\u003c\/strong\u003e Maintain power with the battery type specified for your unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10-year product life:\u003c\/strong\u003e Product service life is separate from battery life; batteries need replacement during use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest button:\u003c\/strong\u003e Check operation as part of your regular alarm maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAudible alarm:\u003c\/strong\u003e Rated at ≥85 dB(A) at 10 feet (3.05 m), as stated in the product manual.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-battery warning:\u003c\/strong\u003e A signal reminds you when the battery needs attention.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoose your home safety setup\u003c\/h3\u003e\n\u003cp\u003eFor separate carbon monoxide detection, add the \u003ca href=\"\/products\/gs846a-plug-in-carbon-monoxide-detector\"\u003e plug-in CO alarm\u003c\/a\u003e; each device operates independently. Prefer a smoke alarm with a built-in battery designed for 10 years? Compare the \u003ca href=\"\/products\/gs525a-10-year-battery-smoke-detector\"\u003eGS525A 10-year battery smoke alarm\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eFor setup, placement and routine testing, follow the instructions supplied with your alarm. Browse our \u003ca href=\"\/pages\/user-manuals\"\u003eproduct user manuals\u003c\/a\u003e for model-specific guidance. To weigh this sensing method against the alternative, see \u003ca href=\"https:\/\/store.siterwellhome.com\/blogs\/all-blogs\/photoelectric-vs-ionization-smoke-detector\"\u003ehow photoelectric and ionization smoke alarms differ\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eProtect Your Delivery\u003c\/h3\u003e\n\u003cp\u003eFor extra protection against eligible physical loss, external damage or shortage while your order is in transit—and eligible theft after delivery within the coverage term—consider adding optional \u003ca href=\"\/pages\/shipsurance\"\u003e\u003cstrong\u003eShipsurance shipping insurance\u003c\/strong\u003e\u003c\/a\u003e when it is offered at checkout. If you purchased this coverage and a shipping-related issue occurs, review the coverage rules and contact \u003cstrong\u003eSureCircle\u003c\/strong\u003e first to file a claim or check claim status. Product setup, technical support, product defects and manufacturer-warranty questions remain with SITERWELL.\u003c\/p\u003e\n\u003cdiv class=\"siterwell-customer-service\"\u003e\n\u003ch3\u003eCustomer Service\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eU.S. Customer Service Hotline:\u003c\/strong\u003e \u003ca href=\"tel:+18007107321\"\u003e+1 800-710-7321\u003c\/a\u003e\u003cbr\u003eMonday–Friday, 9:00 AM–6:00 PM (EST)\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siterwell","offers":[{"title":"1 Pack","offer_id":53626871054629,"sku":"STORE-GS509A-1","price":15.62,"currency_code":"USD","in_stock":true},{"title":"2 Pack","offer_id":53602756198693,"sku":"STORE-GS509A-2","price":29.68,"currency_code":"USD","in_stock":true},{"title":"4 Pack","offer_id":53602732474661,"sku":"STORE-GS509A-4","price":58.1,"currency_code":"USD","in_stock":true},{"title":"6 Pack","offer_id":53602732540197,"sku":"STORE-GS509A-6","price":85.28,"currency_code":"USD","in_stock":true},{"title":"8 Pack","offer_id":53602732572965,"sku":"STORE-GS509A-8","price":106.22,"currency_code":"USD","in_stock":true},{"title":"10 Pack","offer_id":53602732605733,"sku":"STORE-GS509A-10","price":132.77,"currency_code":"USD","in_stock":true},{"title":"12 Pack","offer_id":53602756231461,"sku":"STORE-GS509A-12","price":159.32,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/5501\/2901\/files\/GS509a-1-1.jpg?v=1788144733"},{"product_id":"gs525a-10-year-battery-smoke-detector","title":"GS525A 10-Year Battery Photoelectric Smoke Detector","description":"\u003ch2\u003eGS525A: Photoelectric smoke detection with a built-in 10-year battery\u003c\/h2\u003e\n\u003cp\u003eThe SITERWELL GS525A combines a photoelectric smoke sensor with a built-in, non-replaceable lithium battery and a 10-year product life. Its standalone design suits homes looking for battery-powered smoke detection without household alarm wiring.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in lithium battery:\u003c\/strong\u003e Sealed and non-replaceable; the alarm has a 10-year product life, subject to operating conditions and the supplied instructions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhotoelectric sensor:\u003c\/strong\u003e Uses light-based sensing to detect smoke.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-battery and fault warnings:\u003c\/strong\u003e Help identify when the alarm needs attention.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest and silence button:\u003c\/strong\u003e Makes routine checks and the specified silence functions accessible.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible mounting:\u003c\/strong\u003e Screws are included for wall or ceiling installation; the adhesive option ships as either 3M tape or a magnetic pad, selected at random.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoose your home safety setup\u003c\/h3\u003e\n\u003cp\u003eAdd the \u003ca href=\"\/products\/gs846a-plug-in-carbon-monoxide-detector\"\u003eGS846A plug-in carbon monoxide alarm\u003c\/a\u003e for independent CO detection alongside your smoke alarms. For a replaceable-battery smoke alarm, compare the \u003ca href=\"\/products\/gs509a-photoelectric-smoke-detector\"\u003eGS509A smoke alarm\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eFor setup, placement and routine testing, follow the instructions supplied with your alarm. Browse our \u003ca href=\"\/pages\/user-manuals\"\u003eproduct user manuals\u003c\/a\u003e for model-specific guidance. For a \u003ca href=\"https:\/\/store.siterwellhome.com\/blogs\/all-blogs\/photoelectric-vs-ionization-smoke-detector\"\u003ephotoelectric vs ionization comparison\u003c\/a\u003e, see our guide.\u003c\/p\u003e\n\u003ch3\u003eProtect Your Delivery\u003c\/h3\u003e\n\u003cp\u003eFor extra protection against eligible physical loss, external damage or shortage while your order is in transit—and eligible theft after delivery within the coverage term—consider adding optional \u003ca href=\"\/pages\/shipsurance\"\u003e\u003cstrong\u003eShipsurance shipping insurance\u003c\/strong\u003e\u003c\/a\u003e when it is offered at checkout. If you purchased this coverage and a shipping-related issue occurs, review the coverage rules and contact \u003cstrong\u003eSureCircle\u003c\/strong\u003e first to file a claim or check claim status. Product setup, technical support, product defects and manufacturer-warranty questions remain with \u003cstrong\u003eSITERWELL.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"siterwell-customer-service\"\u003e\n\u003ch3\u003eCustomer Service\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eU.S. Customer Service Hotline:\u003c\/strong\u003e \u003ca href=\"tel:+18007107321\"\u003e+1 800-710-7321\u003c\/a\u003e\u003cbr\u003eMonday–Friday, 9:00 AM–6:00 PM (EST)\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siterwell","offers":[{"title":"1 Pack","offer_id":53628202811685,"sku":"STORE-GS525A-1","price":23.78,"currency_code":"USD","in_stock":true},{"title":"2 Pack","offer_id":53602878390565,"sku":"STORE-GS525A-2","price":45.18,"currency_code":"USD","in_stock":true},{"title":"3 Pack","offer_id":53602878423333,"sku":"STORE-GS525A-3","price":67.06,"currency_code":"USD","in_stock":true},{"title":"4 Pack","offer_id":53602878456101,"sku":"STORE-GS525A-4","price":88.46,"currency_code":"USD","in_stock":true},{"title":"6 Pack","offer_id":53602878488869,"sku":"STORE-GS525A-6","price":129.84,"currency_code":"USD","in_stock":true},{"title":"8 Pack","offer_id":53602878521637,"sku":"STORE-GS525A-8","price":161.7,"currency_code":"USD","in_stock":true},{"title":"10 Pack","offer_id":53602878554405,"sku":"STORE-GS525A-10","price":202.13,"currency_code":"USD","in_stock":true},{"title":"12 Pack","offer_id":53602878587173,"sku":"STORE-GS525A-12","price":242.55,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/5501\/2901\/files\/525-1.png?v=1788147582"},{"product_id":"gs886a-3rfdt-wireless-interconnected-smoke-co-detector","title":"GS886A-3RFDT Wireless Interconnected Smoke \u0026 CO Detector","description":"\u003ch2\u003eGS886A-3RFDT: Wireless interconnected smoke and CO detection\u003c\/h2\u003e\u003cp\u003eThe SITERWELL GS886A-3RFDT (A8612B-4R) combines smoke and carbon monoxide detection with wireless alarm interconnection. It is designed for a coordinated alarm setup using compatible units, without running interconnect wiring between alarm locations.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo detection functions:\u003c\/strong\u003e Smoke and CO sensing in one alarm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWireless interconnection:\u003c\/strong\u003e Compatible, correctly paired alarms can sound together when an alarm is triggered; up to 18 alarms in one network.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in lithium battery:\u003c\/strong\u003e Sealed and non-replaceable; the alarm has a 10-year product life under the specified operating conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBilingual voice alerts:\u003c\/strong\u003e English and French voice options accompany audible warnings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical smoke sensing:\u003c\/strong\u003e Multi-criteria optical sensing supports smoke detection.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eChoose your home safety setup\u003c\/h3\u003e\u003cp\u003eFor a hardwired installation, compare the \u003ca href=\"\/products\/gs886a-3wcar-hardwired-interconnected-smoke-co-detector\"\u003eGS886A-3WCAR hardwired smoke and CO alarm\u003c\/a\u003e. For a separate travel CO detector with a display, explore the \u003ca href=\"\/products\/gs828a-travel-carbon-monoxide-detector\"\u003eGS828A portable CO alarm\u003c\/a\u003e. These are selection options; any mixed-model interconnection must be confirmed before purchase.\u003c\/p\u003e\u003cp\u003eOnly pair models explicitly approved in the supplied instructions. Wireless interconnection does not by itself provide Wi-Fi, app control or compatibility with every SITERWELL alarm. For help planning a system, \u003ca href=\"\/pages\/contact-us\"\u003econtact SITERWELL\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eProtect Your Delivery\u003c\/h3\u003e\u003cp\u003eFor extra protection against eligible physical loss, external damage or shortage while your order is in transit—and eligible theft after delivery within the coverage term—consider adding optional \u003ca href=\"\/pages\/shipsurance\"\u003e\u003cstrong\u003eShipsurance shipping insurance\u003c\/strong\u003e\u003c\/a\u003e when it is offered at checkout. If you purchased this coverage and a shipping-related issue occurs, review the coverage rules and contact \u003cstrong\u003eSureCircle\u003c\/strong\u003e first to file a claim or check claim status. Product setup, technical support, product defects and manufacturer-warranty questions remain with SITERWELL.\u003c\/p\u003e\n\u003cdiv class=\"siterwell-customer-service\"\u003e\n\u003ch3\u003eCustomer Service\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eU.S. Customer Service Hotline:\u003c\/strong\u003e \u003ca href=\"tel:+18007107321\"\u003e+1 800-710-7321\u003c\/a\u003e\u003cbr\u003eMonday–Friday, 9:00 AM–6:00 PM (EST)\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siterwell","offers":[{"title":"Default Title","offer_id":49804499878181,"sku":"STORE-GS886A-3RFDT-1","price":39.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/5501\/2901\/files\/GS886A-3RFDT-1.jpg?v=1788146566"},{"product_id":"gs886a-3ncdt-standalone-smoke-co-detector","title":"GS886A-3NCDT Standalone 2-in-1 Smoke \u0026 CO Detector with Voice Alert","description":"\u003ch2\u003eGS886A-3NCDT: Standalone smoke and carbon monoxide protection in one alarm\u003c\/h2\u003e\n\u003cp\u003eThe SITERWELL GS886A-3NCDT combines smoke and carbon monoxide detection with bilingual voice alerts in one standalone alarm. It operates independently and \u003cstrong\u003edoes not support wireless interconnection with other alarms\u003c\/strong\u003e. Its built-in lithium battery and dual-sensor design make it a straightforward option for households that want two-hazard protection from a single device.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e2-in-1 smoke and CO detection:\u003c\/strong\u003e Smoke and carbon monoxide sensing functions are combined in one alarm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandalone operation:\u003c\/strong\u003e Each GS886A-3NCDT operates independently and is not designed to interconnect with other alarms.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnglish and French voice alerts:\u003c\/strong\u003e Spoken warnings provide additional alarm information alongside the audible alert.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in lithium battery:\u003c\/strong\u003e Sealed and non-replaceable; the alarm has a 10-year product life under the specified operating conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptical smoke sensing:\u003c\/strong\u003e Multi-criteria optical sensing helps detect smoke conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAudible warning:\u003c\/strong\u003e Alerts occupants when the unit detects an alarm condition.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNeed interconnected alarms instead?\u003c\/h3\u003e\n\u003cp\u003eIf alarm-to-alarm interconnection is required for your home or project, compare the \u003ca href=\"\/products\/gs886a-3rfdt-wireless-interconnected-smoke-co-detector\"\u003eGS886A-3RFDT wireless interconnected smoke \u0026amp; CO alarm\u003c\/a\u003e. For a hardwired interconnected option, explore the \u003ca href=\"\/products\/gs886f-h02-hardwired-interconnected-smoke-co-detector\"\u003eGS886F-H02 combination alarm\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eAlways verify the exact model number and installation requirements before ordering. Follow the instructions supplied with your alarm for installation, testing and maintenance.\u003c\/p\u003e\n\n\u003ch3\u003eProtect Your Delivery\u003c\/h3\u003e\n\u003cp\u003eFor extra protection against eligible physical loss, external damage or shortage while your order is in transit—and eligible theft after delivery within the coverage term—consider adding optional \u003ca href=\"\/pages\/shipsurance\"\u003e\u003cstrong\u003eShipsurance shipping insurance\u003c\/strong\u003e\u003c\/a\u003e when it is offered at checkout. If you purchased this coverage and a shipping-related issue occurs, review the coverage rules and contact \u003cstrong\u003eSureCircle\u003c\/strong\u003e first to file a claim or check claim status. Product setup, technical support, product defects and manufacturer-warranty questions remain with SITERWELL.\u003c\/p\u003e\n\u003cdiv class=\"siterwell-customer-service\"\u003e\n\u003ch3\u003eCustomer Service\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eU.S. Customer Service Hotline:\u003c\/strong\u003e \u003ca href=\"tel:+18007107321\"\u003e+1 800-710-7321\u003c\/a\u003e\u003cbr\u003eMonday–Friday, 9:00 AM–6:00 PM (EST)\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siterwell","offers":[{"title":"Default Title","offer_id":50035463389477,"sku":"STORE-GS886A-3NCDT-1","price":31.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/5501\/2901\/files\/2_25.jpg?v=1788147212"},{"product_id":"gs846a-plug-in-carbon-monoxide-detector","title":"GS846A Plug-In Carbon Monoxide Detector with Battery Backup","description":"\u003ch2\u003eGS846A: Plug-in carbon monoxide detection with battery backup\u003c\/h2\u003e\u003cp\u003eThe SITERWELL GS846A uses an electrochemical sensor to detect carbon monoxide and plugs into a suitable 120V household outlet. Battery backup and clear status indicators make it a practical addition to a home that already has smoke alarms.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrochemical CO sensor:\u003c\/strong\u003e Dedicated sensing for carbon monoxide.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePlug-in power:\u003c\/strong\u003e Designed for 120V AC household power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBattery backup:\u003c\/strong\u003e Supports operation when AC power is interrupted, subject to battery condition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor-coded indicators:\u003c\/strong\u003e Green indicates power, yellow indicates a fault and red indicates an alarm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAudible alarm:\u003c\/strong\u003e Provides a sound warning when an alarm condition is detected.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eChoose your home safety setup\u003c\/h3\u003e\u003cp\u003eFor smoke detection alongside this CO alarm, choose the \u003ca href=\"\/products\/gs525a-10-year-battery-smoke-detector\"\u003eGS525A built-in battery smoke alarm\u003c\/a\u003e or the \u003ca href=\"\/products\/gs509a-photoelectric-smoke-detector\"\u003eGS509A smoke alarm\u003c\/a\u003e. These products provide separate detection functions and operate independently.\u003c\/p\u003e\u003cp\u003eThe GS846A detects carbon monoxide; smoke and combustible-gas detection require products designed for those hazards. Follow the supplied instructions for outlet location, backup-battery care and testing. For model guidance, \u003ca href=\"\/pages\/contact-us\"\u003econtact SITERWELL\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eProtect Your Delivery\u003c\/h3\u003e\u003cp\u003eFor extra protection against eligible physical loss, external damage or shortage while your order is in transit—and eligible theft after delivery within the coverage term—consider adding optional \u003ca href=\"\/pages\/shipsurance\"\u003e\u003cstrong\u003eShipsurance shipping insurance\u003c\/strong\u003e\u003c\/a\u003e when it is offered at checkout. If you purchased this coverage and a shipping-related issue occurs, review the coverage rules and contact \u003cstrong\u003eSureCircle\u003c\/strong\u003e first to file a claim or check claim status. Product setup, technical support, product defects and manufacturer-warranty questions remain with SITERWELL.\u003c\/p\u003e\n\u003cdiv class=\"siterwell-customer-service\"\u003e\n\u003ch3\u003eCustomer Service\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eU.S. Customer Service Hotline:\u003c\/strong\u003e \u003ca href=\"tel:+18007107321\"\u003e+1 800-710-7321\u003c\/a\u003e\u003cbr\u003eMonday–Friday, 9:00 AM–6:00 PM (EST)\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siterwell","offers":[{"title":"1 Pack","offer_id":53606182027557,"sku":"STORE-GS846A-1","price":21.59,"currency_code":"USD","in_stock":true},{"title":"2 Pack","offer_id":53606176358693,"sku":"STORE-GS846A-2","price":41.59,"currency_code":"USD","in_stock":true},{"title":"4 Pack","offer_id":53606195822885,"sku":"STORE-GS846A-4","price":78.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/5501\/2901\/files\/1_b490a5ca-4a2a-42fe-b734-5cfb7525dd78.jpg?v=1788147336"},{"product_id":"gs886f-h02-hardwired-interconnected-smoke-co-detector","title":"GS886F-H02 Hardwired Interconnected Smoke \u0026 CO Detector with Voice Alert","description":"\u003ch2\u003eGS886F-H02: Hardwired smoke and CO protection with voice alerts\u003c\/h2\u003e\u003cp\u003eThe SITERWELL GS886F-H02 combines photoelectric smoke sensing and electrochemical carbon monoxide sensing in a hardwired alarm. Battery backup and bilingual voice alerts support a home safety setup built around compatible interconnected alarms.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual sensors:\u003c\/strong\u003e Photoelectric smoke detection and electrochemical CO detection in one unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHardwired power:\u003c\/strong\u003e Designed for a 120V AC, 60Hz supply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLithium battery backup:\u003c\/strong\u003e Supports alarm operation during a power interruption, subject to battery condition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWired interconnection:\u003c\/strong\u003e Compatible alarms can sound together when installed and connected as specified; up to 18 alarms in one network.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBilingual voice alerts:\u003c\/strong\u003e English and French options provide spoken warnings.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eChoose your home safety setup\u003c\/h3\u003e\u003cp\u003eCompare the \u003ca href=\"\/products\/gs886a-3wcar-hardwired-interconnected-smoke-co-detector\"\u003eGS886A-3WCAR hardwired smoke and CO alarm\u003c\/a\u003e when selecting a system. For a battery-powered standalone alternative, explore the \u003ca href=\"\/products\/gs886-h02-wireless-smoke-co-detector\"\u003eGS886-H02 smoke and CO alarm\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eConfirm wiring, connectors and the approved model compatibility list before replacing an existing alarm. Cross-links show alternatives, not a guarantee that the models can share an interconnect circuit. Review the \u003ca href=\"\/pages\/user-manuals\"\u003einstallation manuals\u003c\/a\u003e before selecting your setup.\u003c\/p\u003e\u003ch3\u003eProtect Your Delivery\u003c\/h3\u003e\u003cp\u003eFor extra protection against eligible physical loss, external damage or shortage while your order is in transit—and eligible theft after delivery within the coverage term—consider adding optional \u003ca href=\"\/pages\/shipsurance\"\u003e\u003cstrong\u003eShipsurance shipping insurance\u003c\/strong\u003e\u003c\/a\u003e when it is offered at checkout. If you purchased this coverage and a shipping-related issue occurs, review the coverage rules and contact \u003cstrong\u003eSureCircle\u003c\/strong\u003e first to file a claim or check claim status. Product setup, technical support, product defects and manufacturer-warranty questions remain with SITERWELL.\u003c\/p\u003e\n\u003cdiv class=\"siterwell-customer-service\"\u003e\n\u003ch3\u003eCustomer Service\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eU.S. Customer Service Hotline:\u003c\/strong\u003e \u003ca href=\"tel:+18007107321\"\u003e+1 800-710-7321\u003c\/a\u003e\u003cbr\u003eMonday–Friday, 9:00 AM–6:00 PM (EST)\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siterwell","offers":[{"title":"1 Pack","offer_id":53607476003109,"sku":"STORE-GS886F-H02-1","price":51.19,"currency_code":"USD","in_stock":true},{"title":"3 Pack","offer_id":53607476035877,"sku":"STORE-GS886F-H02-3","price":146.39,"currency_code":"USD","in_stock":true},{"title":"5 Pack","offer_id":53607476068645,"sku":"STORE-GS886F-H02-5","price":230.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/5501\/2901\/files\/GS886F-H02-SKU-1.jpg?v=1788149356"},{"product_id":"gs828a-travel-carbon-monoxide-detector","title":"GS828A Portable Carbon Monoxide Detector with LCD Display","description":"\u003ch2\u003eGS828A: Portable carbon monoxide detection with an LCD display\u003c\/h2\u003e\u003cp\u003eThe SITERWELL GS828A is a battery-powered carbon monoxide alarm with an LCD display and audible warning. Its freestanding or wall-mounted design offers flexible placement at home or in suitable indoor travel accommodation.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eElectrochemical sensor:\u003c\/strong\u003e Detects carbon monoxide.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLCD display:\u003c\/strong\u003e Displays real-time CO levels and readings on the built-in LCD according to the alarm's display settings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStatus indicators:\u003c\/strong\u003e Color-coded lights help distinguish power, fault and alarm conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaceable AA batteries:\u003c\/strong\u003e Battery power supports use without a plug-in outlet.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFlexible placement:\u003c\/strong\u003e Use freestanding or wall-mounted as permitted by the supplied instructions.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eChoose your home safety setup\u003c\/h3\u003e\u003cp\u003eFor everyday plug-in CO monitoring at home, compare the \u003ca href=\"\/products\/gs846a-plug-in-carbon-monoxide-detector\"\u003eGS846A CO alarm with battery backup\u003c\/a\u003e. To add separate smoke detection, explore the \u003ca href=\"\/products\/gs525a-10-year-battery-smoke-detector\"\u003eGS525A photoelectric smoke alarm\u003c\/a\u003e. These alarms operate independently.\u003c\/p\u003e\u003cp\u003eSelect locations and operating conditions permitted by the instructions supplied with your unit, and check the replacement date on its label. This product detects CO; it does not detect smoke or combustible-gas leaks. For help choosing a model, \u003ca href=\"\/pages\/contact-us\"\u003econtact SITERWELL\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eProtect Your Delivery\u003c\/h3\u003e\u003cp\u003eFor extra protection against eligible physical loss, external damage or shortage while your order is in transit—and eligible theft after delivery within the coverage term—consider adding optional \u003ca href=\"\/pages\/shipsurance\"\u003e\u003cstrong\u003eShipsurance shipping insurance\u003c\/strong\u003e\u003c\/a\u003e when it is offered at checkout. If you purchased this coverage and a shipping-related issue occurs, review the coverage rules and contact \u003cstrong\u003eSureCircle\u003c\/strong\u003e first to file a claim or check claim status. Product setup, technical support, product defects and manufacturer-warranty questions remain with SITERWELL.\u003c\/p\u003e\n\u003cdiv class=\"siterwell-customer-service\"\u003e\n\u003ch3\u003eCustomer Service\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eU.S. Customer Service Hotline:\u003c\/strong\u003e \u003ca href=\"tel:+18007107321\"\u003e+1 800-710-7321\u003c\/a\u003e\u003cbr\u003eMonday–Friday, 9:00 AM–6:00 PM (EST)\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siterwell","offers":[{"title":"1 Pack","offer_id":53607645118757,"sku":"STORE-GS828A-1","price":20.79,"currency_code":"USD","in_stock":true},{"title":"2 Pack","offer_id":53607645151525,"sku":"STORE-GS828A-2","price":39.99,"currency_code":"USD","in_stock":true},{"title":"4 Pack","offer_id":53607645184293,"sku":"STORE-GS828A-4","price":75.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/5501\/2901\/files\/828A.jpg?v=1788142782"},{"product_id":"gs562a-hardwired-interconnected-smoke-detector","title":"GS562A Hardwired Interconnected Smoke Detector with Test\/Silence Button","description":"\u003ch2\u003eGS562A: Hardwired smoke detection with 9V battery backup\u003c\/h2\u003e\u003cp\u003eThe SITERWELL GS562A is a hardwired smoke alarm for homes with a suitable alarm power supply and interconnect wiring. A 9V backup battery supports operation during a power interruption, while the test and silence button keeps routine checks accessible.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e120V AC power:\u003c\/strong\u003e Designed for a 120V, 60Hz household supply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e9V battery backup:\u003c\/strong\u003e Maintains backup power when the battery is correctly installed and in working condition.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWired interconnection:\u003c\/strong\u003e Supports up to 12 compatible units installed according to the instructions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest and silence button:\u003c\/strong\u003e Provides access to operational checks and the specified silence function.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSingle and multipack options:\u003c\/strong\u003e Choose the pack quantity for your installation plan.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10-year product life:\u003c\/strong\u003e The alarm is designed for up to ten years of service, with scheduled battery replacement.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSilence for about 10 hours:\u003c\/strong\u003e Press the test button to silence low-battery or fault signals and avoid nighttime disturbance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStatus indicators:\u003c\/strong\u003e In normal operation the green LED stays on and the red LED flashes periodically, such as every 40 seconds.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eChoose your home safety setup\u003c\/h3\u003e\u003cp\u003eFor separate CO detection alongside your smoke alarm circuit, add the \u003ca href=\"\/products\/gs846a-plug-in-carbon-monoxide-detector\"\u003eGS846A plug-in carbon monoxide alarm\u003c\/a\u003e, which operates independently. If your project calls for smoke and CO sensing in a single hardwired unit, compare the \u003ca href=\"\/products\/gs886f-h02-hardwired-interconnected-smoke-co-detector\"\u003eGS886F-H02 combination alarm\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eConfirm wiring and model compatibility before installing or replacing interconnected alarms. The comparison link does not establish electrical compatibility with GS562A. Review the \u003ca href=\"\/pages\/user-manuals\"\u003eproduct installation manuals\u003c\/a\u003e for the correct system configuration.\u003c\/p\u003e\u003ch3\u003eProtect Your Delivery\u003c\/h3\u003e\u003cp\u003eFor extra protection against eligible physical loss, external damage or shortage while your order is in transit—and eligible theft after delivery within the coverage term—consider adding optional \u003ca href=\"\/pages\/shipsurance\"\u003e\u003cstrong\u003eShipsurance shipping insurance\u003c\/strong\u003e\u003c\/a\u003e when it is offered at checkout. If you purchased this coverage and a shipping-related issue occurs, review the coverage rules and contact \u003cstrong\u003eSureCircle\u003c\/strong\u003e first to file a claim or check claim status. Product setup, technical support, product defects and manufacturer-warranty questions remain with SITERWELL.\u003c\/p\u003e\n\u003cdiv class=\"siterwell-customer-service\"\u003e\n\u003ch3\u003eCustomer Service\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eU.S. Customer Service Hotline:\u003c\/strong\u003e \u003ca href=\"tel:+18007107321\"\u003e+1 800-710-7321\u003c\/a\u003e\u003cbr\u003eMonday–Friday, 9:00 AM–6:00 PM (EST)\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siterwell","offers":[{"title":"12 Pack","offer_id":53602663924005,"sku":"STORE-GS562A-12","price":221.74,"currency_code":"USD","in_stock":true},{"title":"10 Pack","offer_id":53602671624485,"sku":"STORE-GS562A-10","price":184.78,"currency_code":"USD","in_stock":true},{"title":"8 Pack","offer_id":53602663956773,"sku":"STORE-GS562A-8","price":147.83,"currency_code":"USD","in_stock":true},{"title":"6 Pack","offer_id":53602663989541,"sku":"STORE-GS562A-6","price":118.7,"currency_code":"USD","in_stock":true},{"title":"5 Pack","offer_id":53602664022309,"sku":"STORE-GS562A-5","price":100.0,"currency_code":"USD","in_stock":true},{"title":"4 Pack","offer_id":53602664055077,"sku":"STORE-GS562A-4","price":80.87,"currency_code":"USD","in_stock":true},{"title":"3 Pack","offer_id":53602664087845,"sku":"STORE-GS562A-3","price":61.3,"currency_code":"USD","in_stock":true},{"title":"2 Pack","offer_id":53607727792421,"sku":"STORE-GS562A-2","price":41.3,"currency_code":"USD","in_stock":true},{"title":"1 Pack","offer_id":53607818428709,"sku":"STORE-GS562A-1","price":21.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/5501\/2901\/files\/562.png?v=1788151452"},{"product_id":"gs886a-3wcar-hardwired-interconnected-smoke-co-detector","title":"GS886A-3WCAR Hardwired Interconnected Smoke \u0026 CO Detector","description":"\u003ch2\u003eGS886A-3WCAR: Hardwired smoke and carbon monoxide detection\u003c\/h2\u003e\u003cp\u003eThe SITERWELL GS886A-3WCAR combines smoke and CO detection in a hardwired alarm with battery backup. It is an option for households planning a compatible interconnected alarm installation with both detection functions in one device.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCombination detection:\u003c\/strong\u003e Smoke and carbon monoxide sensing in a single housing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC power:\u003c\/strong\u003e Designed for a 120V AC, 60Hz supply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAA battery backup:\u003c\/strong\u003e Two AA batteries support backup operation during an AC power interruption.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTwo ways to interconnect:\u003c\/strong\u003e Connect approved compatible units by wiring or wirelessly, up to 18 alarms in one network.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e5VA flame-retardant housing:\u003c\/strong\u003e The casing meets the 5VA flame-retardancy standard.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10-year product life:\u003c\/strong\u003e Product service life is separate from the replacement schedule for backup batteries.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eChoose your home safety setup\u003c\/h3\u003e\u003cp\u003eCompare the \u003ca href=\"\/products\/gs886f-h02-hardwired-interconnected-smoke-co-detector\"\u003eGS886F-H02 hardwired combination alarm\u003c\/a\u003e for another hardwired option. For a setup using wireless alarm interconnection, review the \u003ca href=\"\/products\/gs886a-3rfdt-wireless-interconnected-smoke-co-detector\"\u003eGS886A-3RFDT smoke and CO alarm\u003c\/a\u003e.\u003c\/p\u003e\u003cp\u003eConfirm the supported connection method, wiring and full model compatibility before combining alarms. Shared branding or a similar model name does not establish compatibility. For a mixed-model installation, \u003ca href=\"\/pages\/contact-us\"\u003econtact SITERWELL\u003c\/a\u003e before ordering.\u003c\/p\u003e\u003ch3\u003eProtect Your Delivery\u003c\/h3\u003e\u003cp\u003eFor extra protection against eligible physical loss, external damage or shortage while your order is in transit—and eligible theft after delivery within the coverage term—consider adding optional \u003ca href=\"\/pages\/shipsurance\"\u003e\u003cstrong\u003eShipsurance shipping insurance\u003c\/strong\u003e\u003c\/a\u003e when it is offered at checkout. If you purchased this coverage and a shipping-related issue occurs, review the coverage rules and contact \u003cstrong\u003eSureCircle\u003c\/strong\u003e first to file a claim or check claim status. Product setup, technical support, product defects and manufacturer-warranty questions remain with SITERWELL.\u003c\/p\u003e\n\u003cdiv class=\"siterwell-customer-service\"\u003e\n\u003ch3\u003eCustomer Service\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eU.S. Customer Service Hotline:\u003c\/strong\u003e \u003ca href=\"tel:+18007107321\"\u003e+1 800-710-7321\u003c\/a\u003e\u003cbr\u003eMonday–Friday, 9:00 AM–6:00 PM (EST)\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siterwell","offers":[{"title":"5 Pack","offer_id":53607814299941,"sku":"STORE-GS886A-3WCAR-5","price":211.19,"currency_code":"USD","in_stock":true},{"title":"3 Pack","offer_id":53607814267173,"sku":"STORE-GS886A-3WCAR-3","price":129.59,"currency_code":"USD","in_stock":true},{"title":"1 Pack","offer_id":53602892775717,"sku":"STORE-GS886A-3WCAR-1","price":47.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/5501\/2901\/files\/1_5_72c2c3a6-8ed6-4617-8a3a-7501a907f4bf.webp?v=1788149218"},{"product_id":"gs886-h02-wireless-smoke-co-detector","title":"GS886-H02 Standalone Smoke \u0026 CO Detector with Voice Alert","description":"\u003ch2\u003eGS886-H02: Standalone smoke and CO detection with bilingual alerts\u003c\/h2\u003e\u003cp\u003eThe SITERWELL GS886-H02 combines photoelectric smoke sensing and electrochemical CO sensing in a battery-powered standalone alarm. Its built-in lithium battery and English\/French voice options offer a straightforward choice for homes seeking dual detection without hardwired installation.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmoke and CO sensing:\u003c\/strong\u003e Two dedicated sensor types in one device.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in battery:\u003c\/strong\u003e Sealed and non-replaceable; the alarm has a 10-year product life. Actual life depends on operating conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBilingual voice alerts:\u003c\/strong\u003e English and French options accompany the audible alarm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStatus lights:\u003c\/strong\u003e Visual indicators support everyday checks.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandalone operation:\u003c\/strong\u003e Functions as an individual alarm.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLoud alarm:\u003c\/strong\u003e An alarm over 85 dB helps alert occupants, with bilingual voice guidance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo Not Disturb mode:\u003c\/strong\u003e Press the test button to silence low-battery or fault signals for about ten hours.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eChoose your home safety setup\u003c\/h3\u003e\u003cp\u003eFor smoke-only detection, compare the \u003ca href=\"\/products\/gs886-h04-photoelectric-smoke-detector\"\u003eGS886-H04 photoelectric smoke alarm\u003c\/a\u003e. If you need a hardwired interconnected smoke and CO system, explore the \u003ca href=\"\/products\/gs886f-h02-hardwired-interconnected-smoke-co-detector\"\u003eGS886F-H02 combination alarm\u003c\/a\u003e. These are alternative configurations; GS886-H02 is not presented as an interconnect accessory.\u003c\/p\u003e\u003cp\u003eFor setup, placement and routine testing, follow the instructions supplied with your alarm. Browse our \u003ca href=\"\/pages\/user-manuals\"\u003eproduct user manuals\u003c\/a\u003e for model-specific guidance. For \u003ca href=\"https:\/\/store.siterwellhome.com\/blogs\/all-blogs\/photoelectric-vs-ionization-smoke-detector\"\u003ehow the two smoke sensing methods compare\u003c\/a\u003e, see our guide.\u003c\/p\u003e\u003ch3\u003eProtect Your Delivery\u003c\/h3\u003e\u003cp\u003eFor extra protection against eligible physical loss, external damage or shortage while your order is in transit—and eligible theft after delivery within the coverage term—consider adding optional \u003ca href=\"\/pages\/shipsurance\"\u003e\u003cstrong\u003eShipsurance shipping insurance\u003c\/strong\u003e\u003c\/a\u003e when it is offered at checkout. If you purchased this coverage and a shipping-related issue occurs, review the coverage rules and contact \u003cstrong\u003eSureCircle\u003c\/strong\u003e first to file a claim or check claim status. Product setup, technical support, product defects and manufacturer-warranty questions remain with SITERWELL.\u003c\/p\u003e\n\u003cdiv class=\"siterwell-customer-service\"\u003e\n\u003ch3\u003eCustomer Service\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eU.S. Customer Service Hotline:\u003c\/strong\u003e \u003ca href=\"tel:+18007107321\"\u003e+1 800-710-7321\u003c\/a\u003e\u003cbr\u003eMonday–Friday, 9:00 AM–6:00 PM (EST)\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siterwell","offers":[{"title":"1 Pack","offer_id":53607798833445,"sku":"STORE-GS886-H02-1","price":47.99,"currency_code":"USD","in_stock":true},{"title":"2 Pack","offer_id":53607798866213,"sku":"STORE-GS886-H02-2","price":93.59,"currency_code":"USD","in_stock":true},{"title":"4 Pack","offer_id":53607798898981,"sku":"STORE-GS886-H02-4","price":176.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/5501\/2901\/files\/GS886-H02-SKU-1.jpg?v=1788149300"},{"product_id":"gs886-h04-photoelectric-smoke-detector","title":"GS886-H04 10-Year Battery Photoelectric Smoke Detector","description":"\u003ch2\u003eGS886-H04: Photoelectric smoke detection with bilingual voice alerts\u003c\/h2\u003e\u003cp\u003eThe SITERWELL GS886-H04 is a standalone photoelectric smoke alarm with a built-in lithium battery and English\/French voice options. It offers smoke detection for households looking for battery-powered installation and spoken alerts.\u003c\/p\u003e\u003ch3\u003eKey features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhotoelectric smoke sensor:\u003c\/strong\u003e Uses optical sensing to detect smoke.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBuilt-in lithium battery:\u003c\/strong\u003e Sealed and non-replaceable; the alarm has a 10-year product life. Actual life depends on operating conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBilingual voice alerts:\u003c\/strong\u003e Choose English or French voice warnings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAudible and visual signals:\u003c\/strong\u003e An alarm sound and status lights help communicate device conditions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandalone design:\u003c\/strong\u003e Operates independently, without an interconnect circuit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo Not Disturb mode:\u003c\/strong\u003e Press the test button to silence low-battery or fault signals for about ten hours.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eChoose your home safety setup\u003c\/h3\u003e\u003cp\u003eAdd the \u003ca href=\"\/products\/gs846a-plug-in-carbon-monoxide-detector\"\u003eGS846A plug-in CO alarm\u003c\/a\u003e for separate carbon monoxide detection. If you prefer smoke and CO sensing within one battery-powered unit, compare the \u003ca href=\"\/products\/gs886-h02-wireless-smoke-co-detector\"\u003eGS886-H02 combination alarm\u003c\/a\u003e. The separate smoke and CO devices operate independently.\u003c\/p\u003e\u003cp\u003eFor setup, placement and routine testing, follow the instructions supplied with your alarm. Browse our \u003ca href=\"\/pages\/user-manuals\"\u003eproduct user manuals\u003c\/a\u003e for model-specific guidance.\u003c\/p\u003e\u003ch3\u003eProtect Your Delivery\u003c\/h3\u003e\u003cp\u003eFor extra protection against eligible physical loss, external damage or shortage while your order is in transit—and eligible theft after delivery within the coverage term—consider adding optional \u003ca href=\"\/pages\/shipsurance\"\u003e\u003cstrong\u003eShipsurance shipping insurance\u003c\/strong\u003e\u003c\/a\u003e when it is offered at checkout. If you purchased this coverage and a shipping-related issue occurs, review the coverage rules and contact \u003cstrong\u003eSureCircle\u003c\/strong\u003e first to file a claim or check claim status. Product setup, technical support, product defects and manufacturer-warranty questions remain with SITERWELL.\u003c\/p\u003e\n\u003cdiv class=\"siterwell-customer-service\"\u003e\n\u003ch3\u003eCustomer Service\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eU.S. Customer Service Hotline:\u003c\/strong\u003e \u003ca href=\"tel:+18007107321\"\u003e+1 800-710-7321\u003c\/a\u003e\u003cbr\u003eMonday–Friday, 9:00 AM–6:00 PM (EST)\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siterwell","offers":[{"title":"1 Pack","offer_id":53607736475941,"sku":"STORE-GS886-H04-1","price":25.59,"currency_code":"USD","in_stock":true},{"title":"2 Pack","offer_id":53607736508709,"sku":"STORE-GS886-H04-2","price":49.59,"currency_code":"USD","in_stock":true},{"title":"4 Pack","offer_id":53607745126693,"sku":"STORE-GS886-H04-4","price":93.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/5501\/2901\/files\/GS886-H04-SKU-1.jpg?v=1788149330"},{"product_id":"gs509a-2ncdr-photoelectric-smoke-detector","title":"GS509A-2NCDR Photoelectric Smoke Detector with 9V Battery","description":"\u003ch2\u003eGS509A-2NCDR: Smoke detection with simple screw mounting\u003c\/h2\u003e\n\u003cp\u003eThe SITERWELL GS509A-2NCDR is a standalone photoelectric smoke alarm that mounts with the supplied mounting plate, screws and wall plugs, making it a practical choice for straightforward home installation. Its replaceable-battery design keeps routine maintenance accessible, with single and multipack options for planning your alarm locations.\u003c\/p\u003e\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePhotoelectric smoke sensing:\u003c\/strong\u003e Detects smoke using an optical sensor.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eScrew mounting:\u003c\/strong\u003e Fixes to a ceiling or wall with the supplied mounting plate, screws and wall plugs, following the supplied instructions.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eReplaceable battery:\u003c\/strong\u003e Maintain power with the battery type specified for your unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e10-year product life:\u003c\/strong\u003e Product service life is separate from battery life; batteries need replacement during use.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTest button:\u003c\/strong\u003e Check operation as part of your regular alarm maintenance.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAudible alarm:\u003c\/strong\u003e Rated at ≥85 dB(A) at 10 feet (3.05 m), as stated in the product manual.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLow-battery warning:\u003c\/strong\u003e A signal reminds you when the battery needs attention.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoose your home safety setup\u003c\/h3\u003e\n\u003cp\u003eFor separate carbon monoxide detection, add the \u003ca href=\"\/products\/gs846a-plug-in-carbon-monoxide-detector\"\u003ePlug-in CO alarm\u003c\/a\u003e; each device operates independently. Prefer a smoke alarm with a built-in battery designed for 10 years? Compare the \u003ca href=\"\/products\/gs525a-10-year-battery-smoke-detector\"\u003eGS525A 10-year battery smoke alarm\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eFor setup, placement and routine testing, follow the instructions supplied with your alarm. Browse our \u003ca href=\"\/pages\/user-manuals\"\u003eproduct user manuals\u003c\/a\u003e for model-specific guidance. For \u003ca href=\"https:\/\/store.siterwellhome.com\/blogs\/all-blogs\/photoelectric-vs-ionization-smoke-detector\"\u003ethe difference between photoelectric and ionization sensing\u003c\/a\u003e, see our guide.\u003c\/p\u003e\n\u003ch3\u003eProtect Your Delivery\u003c\/h3\u003e\n\u003cp\u003eFor extra protection against eligible physical loss, external damage or shortage while your order is in transit—and eligible theft after delivery within the coverage term—consider adding optional \u003ca href=\"\/pages\/shipsurance\"\u003e\u003cstrong\u003eShipsurance shipping insurance\u003c\/strong\u003e\u003c\/a\u003e when it is offered at checkout. If you purchased this coverage and a shipping-related issue occurs, review the coverage rules and contact \u003cstrong\u003eSureCircle\u003c\/strong\u003e first to file a claim or check claim status. Product setup, technical support, product defects and manufacturer-warranty questions remain with SITERWELL.\u003c\/p\u003e\n\u003cdiv class=\"siterwell-customer-service\"\u003e\n\u003ch3\u003eCustomer Service\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eU.S. Customer Service Hotline:\u003c\/strong\u003e \u003ca href=\"tel:+18007107321\"\u003e+1 800-710-7321\u003c\/a\u003e\u003cbr\u003eMonday–Friday, 9:00 AM–6:00 PM (EST)\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siterwell","offers":[{"title":"2 Pack","offer_id":53924130095397,"sku":"STORE-GS509A-2NCDR-2","price":31.98,"currency_code":"USD","in_stock":true},{"title":"4 Pack","offer_id":53924130128165,"sku":"STORE-GS509A-2NCDR-4","price":63.96,"currency_code":"USD","in_stock":true},{"title":"6 Pack","offer_id":53924130160933,"sku":"STORE-GS509A-2NCDR-6","price":95.54,"currency_code":"USD","in_stock":true},{"title":"1 Pack","offer_id":53924130062629,"sku":"STORE-GS509A-2NCDR-1","price":15.99,"currency_code":"USD","in_stock":true},{"title":"8 Pack","offer_id":53924130193701,"sku":"STORE-GS509A-2NCDR-8","price":125.99,"currency_code":"USD","in_stock":true},{"title":"10 Pack","offer_id":53924130226469,"sku":"STORE-GS509A-2NCDR-10","price":147.99,"currency_code":"USD","in_stock":true},{"title":"12 Pack","offer_id":53924130259237,"sku":"STORE-GS509A-2NCDR-12","price":166.99,"currency_code":"USD","in_stock":true},{"title":"24 Pack","offer_id":53924130292005,"sku":"STORE-GS509A-2NCDR-24","price":326.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/5501\/2901\/files\/5_63620491-c3a1-424f-a771-11f0b1bea161.jpg?v=1789538886"},{"product_id":"gs886f-hardwired-interconnected-smoke-co-alarm","title":"GS886F Hardwired Smoke \u0026 CO Alarm with Voice Alert","description":"\u003ch3\u003e\u003cspan\u003eTwo Hazards. One Alarm.\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eA photoelectric smoke sensor and an electrochemical carbon monoxide sensor monitor two different household hazards. When danger is detected, distinct audible warnings help you recognize the type of emergency.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eConnected Alerts Across Your Home\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eDesigned for compatible interconnected alarm systems, the GS886F helps extend audible warnings beyond the room where a hazard is detected.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eBefore installation, confirm that your existing wiring and interconnected alarm models are compatible.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eAC Power with Battery Backup\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe GS886F uses a 120V AC power connection with two replaceable AA backup batteries. When household power is interrupted, properly installed and functioning backup batteries support continued alarm operation.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eReplace backup batteries as directed in the product manual.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eClear Alerts. Simple Checks.\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eVoice warnings help distinguish smoke emergencies from carbon monoxide emergencies. The TEST\/SILENCE button and status indicators support routine testing and maintenance.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eTest each alarm regularly according to its user manual, even when automatic monitoring or fault alerts are available.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eDesigned for Long-Term Home Safety\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThe GS886F is designed with a 10-year sensor service life. Replace the alarm by the manufacturer's specified replacement date, and maintain its replaceable backup batteries throughout use.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003eCheck Your Home Before Buying\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThis model is intended for suitable hardwired residential alarm installations. Existing connectors, mounting brackets, and interconnected alarms may require changes or replacement.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor wiring questions or product compatibility assistance, visit our \u003c\/span\u003e\u003ca href=\"https:\/\/store.siterwellhome.com\/pages\/support-center\"\u003e\u003cspan\u003eSupport Center\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eExplore our \u003c\/span\u003e\u003ca href=\"https:\/\/store.siterwellhome.com\/collections\/hardwired-interconnected-detectors\"\u003e\u003cspan\u003eHardwired Smoke \u0026amp; CO Alarm Collection\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e to compare other home safety options.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eFor additional setup and maintenance resources, visit \u003c\/span\u003e\u003ca href=\"https:\/\/store.siterwellhome.com\/pages\/user-manuals\"\u003e\u003cspan\u003eProduct User Manuals\u003c\/span\u003e\u003c\/a\u003e\u003cspan\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cspan\u003eChoose the right setup for your home. Protect every level with confidence.\u003c\/span\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cdiv class=\"siterwell-customer-service\"\u003e\n\u003ch3\u003eCustomer Service\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eU.S. Customer Service Hotline:\u003c\/strong\u003e \u003ca href=\"tel:+18007107321\"\u003e+1 800-710-7321\u003c\/a\u003e\u003cbr\u003eMonday–Friday, 9:00 AM–6:00 PM (EST)\u003c\/p\u003e\n\u003c\/div\u003e","brand":"siterwell.us","offers":[{"title":"1 Pack","offer_id":54137603195173,"sku":"STORE-GS886F-1","price":47.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0755\/5501\/2901\/files\/GS886F_A2.png?v=1792485923"}],"url":"https:\/\/store.siterwellhome.com\/collections\/best-sellers.oembed","provider":"siterwell.us","version":"1.0","type":"link"}