German engineers from the Fraunhofer Institute has unveiled a prototype of wireless door/window sensor. It has two main distinctions from existing sensors. First of all the new one is mounted into to the handles of the door/window and it uses its position to understand opened or closed door/window. It makes installation procedure easier.
Another big distinction is how the sensor is powered. It doesn’t have a battery. Instead of that it takes power from the ambient radio waves. So, it’ll work forever.
To communicate with controller the new sensor uses wireless connection. But there is no information used protocol. Also no any words when the new batteryless sensors will be available for buying.