First Alert P910 Sealed Battery Tamperproof Smoke Alarm, 3 V "h" Style Powerful motor with constant speed

Powerful motor with constant speed control won't stall under heavy load

sharp punch punctures air bag

Helps save energyGrounded plug for safety

Open wound helical finished at ends

First Alert P910 Sealed Battery Tamperproof Smoke Alarm, 3 V "h" Style Powerful motor with constant speedHighlights: Tamperproof sealed alarm powercell cannot be removed Silence feature Power LED and alarm indicator End of life signal Versatile mount wall or ceiling, Slide in mounting bracket Tamper resistant 10% to 95% relative humidity range Electronically simulates smoke condition, causing the unit to alarm, press and hold test silence button Automatic when smoke clears Usage for apartments, dormitories, hospitals, hotels and motels Note: Restricted