This product named Photoelectric detector detects the smoke by a couple of infrared diodes.
The principle of detecting is granule in the smoke can reflect infrared light.
Features:
Test by hand
Auto-reset
ASIC adopted
Anti-light, Mothproof, Disproof
Strong Adaptability For Circumstances
SMT Design, High Stability
Easy to install with mounting hardware included
9 Volt Battery Included
Suitable for any room
Test button for easy recommended monthly testing
Low Battery signal
To protect you, a safety clip will not allow mounting of smoke alarm without 9volt battery installed.
Photoelectric sensor for early detection from all directions