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 material.
Ideal entry warning for homes, apartments, mobile homes, do rms, offices, hotel rooms, garages, etc
Magnetic sensor switch detects entry protecting your home or office whether you are in or out
Operated by 3pcs of 1. 5V LR44 / AG 13 button cell ( included )