The UKU Door Sensor from HUUM lets a HUUM UKU control system keep track of whether the sauna door is open or closed. When it registers an open door it can stop the heater from running, which cuts wasted power and heat loss and helps the room reach and hold its temperature.
It is a two-piece set: the sensor fits on the door frame and its matching magnet on the door leaf. Both mount with minimal tools in a new or an existing installation, and the parts are built for warm, humid sauna conditions.