Kidde Micro Smoke Alarm, Detection Method: Ionization, Power Source: 9V, 85dB Audible Alert, Visual Alert: Red LED, Size: 1.6" H x 4.8" W x 4.8" Dia., White, Test Button: Yes
- Utilizes ionization sensing technology
- Test button tests unit's electronic circuitry, horn and battery function
- Low battery indicator indicates low battery warning chirp alerts user to change battery
- Battery operated - easy installation and continuous protection even during power outages
- LED Flashes every 30 to 40 sec. to indicate that the smoke alarm is receiving power