![CDATA[The FTKB wireless window/door contact is a smart home sensor that is powered by a solar cell and a long-lasting button cell (CR2032). From 100 lux, the solar cell takes over the power supply, otherwise the button cell lasts for several years. The sensor measures 75 x 25 x 12 mm and is mounted by gluing. It sends a signal twice each time it is opened or closed, and status messages are sent every eight minutes and voltage telegrams every hour. The sensor can be configured using a learning button and is compatible with many smart home actuators. With certain actuators, a lock-out protection is activated that blocks central down commands when the door is open. The distance between the sensor and the magnet must not exceed 5 mm.]]>
