Using this battery operated magnet sensor, you can monitor doors, windows and drawers everywhere in your home. Since it so small you can place it even in tight places.
This sensor also has a countdown function. As soon as the sensor has been triggered, you can set it to automatically send an off-signal in 5 or 10 minutes. By default this function is turned off. Many sensors may only send an on-signal that will for example turn a light on. But with this delay function you also may turn it off again after chosen time.
The sensor is powered by a 3V button cell battery (CR2032) that you can by on almost any store. One battery is included.
Also included are double sided adhesive tape and screws for easy installation on most surfaces.