Battery Operated Smoke Alarms, Smoke, Ionization, 5.6 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