GS886A-3NCDT Standalone 2-in-1 Smoke & CO Detector with Voice Alert
About GS886A-3NCDT
- Sealed Lithium Battery:Non-replaceable battery; replace the complete alarm every 10 years from the date code.
- Accurate Alarm:Multi-criteria optical sensing reduces false alarms by distinguishing non-fire smoke.
- 2-in-1 Protection:Dual sensors detect smoke and CO, with over 85 dB sound warning.
- Easy Installation:3.62-inch backplate fits most detectors, installs with a twist.
- One-Touch Mute for 10 hours:No more low-battery beeps—sleep soundly all night.
- Micro-mesh Design:Prevents insects and debris for more accurate alarms.
- Soft Lighting:Reduces direct light at night, ensuring no disturbances.
- Dual-language Voice Alerts:English and French options for multilingual households.
- Also sold as the A8612B-4: GS886A-3NCDT and A8612B-4 are two names for the same standalone smoke and CO alarm.
GS886A-3NCDT
Built-in 3V lithium battery (non-replaceable)
Multi-Criteria Optical
>85dB(A) @ 3 meters
40°F (4.4°C) to 100°F (37.8°C)
10-95%RH (non-condensing)
Max. 40 m² within a room
About 6.1 inches wide and 1.7 inches tall
GS886A-3NCDT
GS886A-3NCDT Rendering Video
U.S. Customer Service
Monday–Friday, 9:00 AM–6:00 PM (EST)
Frequently asked questions
Does the GS886A-3NCDT detect both smoke and carbon monoxide?
Does the GS886A-3NCDT detect both smoke and carbon monoxide?
Yes. It combines a multi-criteria optical smoke sensor and an electrochemical CO sensor. The two sensors work independently and trigger different alarm patterns, so the unit can warn you about either a fire or a CO event.
Does the GS886A-3NCDT require yearly battery replacement?
Does the GS886A-3NCDT require yearly battery replacement?
No. It uses a built-in, non-replaceable CR17450 3V lithium battery. The manual says to replace the complete alarm every 10 years from the date code on the back; the battery itself is not user-replaceable.
Is the GS886A-3NCDT interconnected?
Is the GS886A-3NCDT interconnected?
No. It is a standalone alarm. It does not support hardwired interconnection or 915 MHz wireless pairing. For whole-home interconnection, choose the GS886A-3RFDT or GS886A-3WCAR.
How do I tell whether the GS886A-3NCDT is detecting smoke or CO?
How do I tell whether the GS886A-3NCDT is detecting smoke or CO?
Smoke triggers three beeps in the Temporal 3 pattern with the voice message “Fire!”. CO triggers four beeps in the Temporal 4 pattern with “Warning! Carbon Monoxide”. The patterns and voice messages are different by design.
How long is the silence period on the GS886A-3NCDT?
How long is the silence period on the GS886A-3NCDT?
Smoke alarm silence is about 8 minutes; CO alarm silence is about 5 minutes. Dense smoke or a real CO condition overrides silence. Never remove the unit to stop an alarm.
What area does one GS886A-3NCDT cover?
What area does one GS886A-3NCDT cover?
The specification lists a maximum detection area of about 40 m² within a room. Use the manual’s placement rules and add units for adjacent rooms, hallways and each level of the home.
Where should I install the GS886A-3NCDT?
Where should I install the GS886A-3NCDT?
Install it on the ceiling or wall in each bedroom, outside each sleeping area and on every level. Keep it at least 6 feet from cooking and heating appliances. Do not use it in an RV or boat. Cooking smoke can still trigger the smoke sensor; ventilate and use TEST/SILENCE for a nuisance alarm.
What should I do if the GS886A-3NCDT alarms?
What should I do if the GS886A-3NCDT alarms?
Listen to the pattern: three long beeps and “Fire!” mean smoke; four quick beeps and “Warning! Carbon Monoxide” mean CO. For smoke, evacuate and call 911. For CO, move everyone outdoors and call 911 from outside; do not re-enter until responders say it is safe. Treat any alarm as real until the source is identified.
What standards does the GS886A-3NCDT meet?
What standards does the GS886A-3NCDT meet?
The manual lists UL 217 for smoke and UL 2034 for CO, and certifies to CAN/ULC S531-19 and CSA 6.19-17. Check the label and current manual for the exact editions.
What does the warranty cover?
What does the warranty cover?
The manual states a 36-month limited warranty from the date of purchase. It covers material or production defects and excludes normal wear. Keep your receipt for any claim.
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