This smoke alarm is designed for bedrooms and hallways. Photoelectric smoke alarms have a sensing chamber which uses a beam of light and a light sensor. When smoke enters the chamber it changes the amount of light that reaches the sensor and the alarm sounds when the smoke reaches a certain level. They are best at detecting slow burning fires which burn for hours before bursting into flame. Powered by a single 9 Volt battery.
FEATURES:
9 Volt alkaline battery
Hush Button
Test Button
Extra loud 85db warning tone
Low battery warning
Mounting hardware included
