- 4 WINDOW & DOOR BURGLAR INTRUDER ALARMS WIRELESS SENSOR -

Easy Installation Complete With Mounting Pads (Batteries Included).

Protects Doors & Windows.105DB Instant Alarm. On/Off Switch.

Simply attach one piece to your door or window, and attach the other piece to the door or window frame.

When someone opens the protected door or window, the unit instantly alerts you with a loud siren.

It also has an on/off switch so you can open your door or window to let in some fresh air if you want to.