-Super loud 90 dB alarm -Convenience in installation–just peel and stick -Super environmental suitability and stability -Dustproof and insect prevention -Easily mounted by adhesive. Type to window or door. Ideal entry warning for homes, apartments, mobile homes, do rms, offices, hotel rooms, garages, and more! -Magnetic sensor switch detects entry protecting your home or office whether you are in or out -Warning door / window sticker is supplied free in package -Operated by 3pcs of 1. 5V LR44 ( included ) -Material: plastic
