Battery Operated 4" Smoke Alarm

Battery Operated 4" Smoke Alarm
Test Button -tests units electronic circuitry, horn and battery functions
Discreet Design -4" diameter
Power Source: 9V Battery (included)
Audio Alarm: 85dB at 10ft
Temperature Range: 40?F to 100?F (4°C to 38°C)
Humidity Range: up to 85% relative humidity (RH)
Sensor: Ionization
Size: 4” in diameter x 1.45” depth
Weight: .5lbs
Interconnects: No
Warranty: 3 year limited