Using electromagnetic induction technology， easy to install and inexpensive. The open state， simply open the doors and windows. The machine will emit a high-decibel alarm. Security doors and windows to let you stay away from too inconvenient to bring you. Fully enjoy the sunshine and the freedom of it. 

Use: Install in the family， company， warehouse doors and windows， cabinets， drawers， etc. will not allow others to open the place， when thieves forced open the doors and windows; outsiders or business stay open the door， it will alert， please immediately check Make sure your property and safety compromised. 

Use: Simply tape the back of theft security alarm ripped， were affixed to both sides of the door or window， when you use， simply switch to the "ON" position， it will open in a standby state， if a man will door or window to move or open a drawer， it will immediately sound an alarm to deter thieves and remind you to view， until you switch to the "OFF" position， or you close the doors， drawers stopped (1.5V Built-in three button batteries， can use 6-12 months. runs can be replaced).