Fast Detection.
Fewer Nuisance Alarms.
360° smoke entry, dual-wave sensing and adaptive compensation work together for fast, reliable home protection.
Fast Detection.
Engineered for
Reliable Detection
Certified performance, responsive detection and straightforward
controls for everyday home safety.
All-Around
Smoke Entry
Openings around the alarm
allow smoke to enter from every direction.
Fewer
Nuisance
Dual-wave sensing helps distinguish everyday cooking smoke from potential fire smoke.
Tested.
Listed.
Certified to UL 217 and CAN/ULC-S531 safety standards for residential smoke alarms.
One-Touch
Test & Silence
The large center button makes routine testing and temporary alarm silencing simple.
Simple
Battery-Powered
A replaceable battery and mounting plate provide dependable protection without household rewiring.
A Clear
85 dB Alarm
A powerful audible warning helps alert people in the room when smoke is detected.
Adaptive
Compensation
Automatically adjusts for dust and environmental changes over time.
Smoke Detection While You Sleep
Photoelectric sensing detects smoke and triggers an 85 dB alarm to alert you to potential danger.
Directing Smoke
Where Detection Happens
Internal baffles guide incoming smoke toward the sensing chamber, helping more smoke reach the sensor.
Two Wavelengths.
More Precise Sensing.
Two wavelengths of light help distinguish cooking smoke from fire smoke, reducing nuisance alarms during everyday cooking.
More Control Over Battery Reminders
Pause low-battery chirps for up to 10 hours when you need time to replace the battery.
Stick. Snap. Done
3M Adhesive, or Dry wall mounting
Everything You Need
Right in the Box
GS509A
User Manual
Battery
9V Backup
Sticker
Adhesive Installation
Plate
Universal Mounting
Screws & Plugs
Drywall, and more