Homematic IP window handle sensor for the smart monitoring of the window opening status This sensor detects the position of the window handle, whether the window is open, tilted or closed. It can be used on window handles that open to the right or to the left. The sensor can be powered by one battery for around two years. The battery can be replaced. Homematic IP alarm sirens can be activated by the window handle sensor. When they are activated, opening a window, damage to the window or the removal of the sensor (tamper contact on the sensor) triggers an alarm and - if configured accordingly - a push message to your smartphone. This also allows you to monitor the sensor remotely at any time. Another option is linking the window handle sensor to radiator thermostats in order to achieve a reduction in the heating costs by lowering the heating power during ventilation. Features / compatibility - Homematic IP integrates the areas of indoor climate, security, fire and water protection, weat