The Aeotec Door/Window Sensor 7 is a sensor, which detects, if your window is opened, closed or tilted which requires a tilt angle of at least 5°. The sensor is easily retrofittable. Furthermore, the Aeotec Door/Window Sensor 7 can include other sensors by being connected with other binary sensors like NTC contacts, micro switches or flood sensor. Thanks to its slim design the Aeotec Door/Window Sensor 7 can be installed unflashy on every window. The sensor just has to be installed on the window casement. Additionally, there has to be a slim magnet installed closely to the sensor at the window frame.