Funk 2-Channel Mini Remote Control, measuring 43x43 mm and 16 mm high. Weighs only 30 grams. Generates energy for radio telegrams even when the button is pressed, therefore no battery is needed. Smart Home Sensor. The battery-free mini remote control FMH2 features 1 rocker switch, allowing for the transmission of 2 evaluable radio telegrams. The rocker is laser-engraved with 0 and I. This radio remote control can be attached to walls, glass, or furniture using the included adhesive film, just like wireless push buttons. The mini remote control comes with the following engraving: Top 0 (= off) and bottom I (= on).