Kidde Fire Sentry DC Smoke Alarm w Plate, 4 inch (Ionization)

Alarm operates on one 9V battery (there's no wiring required) for continuous protection—even during a power outage. Unit uses ionization technology for excellent fast-flaming fire detection too. UL listed. 3-Year warranty.

Technical Data:
- Power Source: 9V battery (included)
- Sensor: Ionization
- Audio Alarm: 85 dB at 10 ft
- Size: 4" x 1 7/16"
- Weight: 8 oz
- Warranty: 3-year limited