Door/window Stand-alone Alarm Wireless : : (General Household Items)
When The Circuit Is Broken, An Alarm Sounds - Lets You Know If There's An Intruder! It Works Independent Of Expensive Alarm System. Simply Attach Bar Magnet To Doorframe Or Window Frame, Aligned With The Main Unit That Attaches To The Door/window. Magnet And The Main Unit Can Be 10mm (1cm Or 3/8") Apart. Simple On/off Switch On The Side Of The Main Unit. Main Unit Measures 2 1/2" X 1 1/4" X 1" And The Magnet Measures 2 1/4" X 3/8" X 1/2" Including Double-sided Adhesive.

Easily Mounted by adhesive tape to window or door.

Magnetic sensor switch detects entry protecting your home or office.