Kidde Fire Sentry Battery Ionization Smoke Alarm w/ Trim Ring

Kidde Ionization Smoke Alarms provide early warning and operate on a 9V battery that provides continuous protection, even during a power outage. No wiring required. UL Listed. Power Source: 9V Battery (Included) Sensor: Ionization Audio Alarm: 85dB at 10 ft Temperature Range: 40°F to 100°F Humidity Range: 5%-95% relative humidity Size: 4" Diameter x 1.45" Depth Weight: .5 lbs Interconnect: No LED: No Digital Display: No Warranty: 3 year limited This easy to install unit includes a test button to verify the detection electronics are working as intended