Wireless Magnetic Anti-theft Alarm

Super loud alarm! Magnetic sensor detects when your windows, doors, cabinets, and so on opens or move. Emits clear and loud sound to scare intruder. Warning the intruder to leave and remind the owner. Freely switch control. Can be turned off and on, or when want to use it only. Requires two AAA batteries. Environmental suitability and stable. Easy installation with adhesives attached to it. Easy to use for Home, mobile homes, garages, shed, offices, cars, apartments, hotels, safe, etc. Comes with two sets.