Wireless Magnetic Door Sensor Independent Alarm

Features: *The independent door sensor can work alone, once triggered, it will send out 110db warning to scare away the thief. *Simply attach one piece to your door,window or cabinet door, and attach the other piece to the door or window frame. *Ideal intrusion warning for homes, apartments, dorms, offices, hotel rooms, garages, shop counter, Internet bar, etc. *Excellent design, tiny and fashion. Easily install with adhesive tape. *With ON/OFF switch. Low-consumption design, more power-saving. Discounted at only: US$ 12.35