Battery Operated Smoke Alarms, Smoke, Ionization, 4 in Diam

Test button—Tests unit's electronic circuitry, horn and battery function
Low battery indicator—Smoke alarm will chirp in the event of a low battery
Red LED—Flashes every 30-40 seconds to indicate that the smoke alarm is receiving power
Dust cover
Battery operated—Easy installation and continuous protection even during power outages

Quantity 1EA

Specifications

Depth [Nom]=1.45 in
Dia. [Nom]=4 in
Display Type=LED
Gas Type=Smoke
Includes=5 in Mounting Plate
Power Source=9V Battery
Run Time [Max]=N/A
Sensor Type=Ionization
Sound Level=85 dB
Temp. Range [Max]=100F
Temp. Range [Min]=40F
Wt.=0 lb