Eltako FMH2-sz radio mini hand-held transmitter

2-channel mini radio transmitter measuring 43x43 mm and 16 mm high. Weighs only 30 grams. Generates energy for radio signals even when the button is pressed, thus no battery is required. Smart Home sensor. The battery-free mini transmitter FMH2 features 1 rocker switch, allowing for the transmission of 2 evaluable radio signals. 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 transmitter comes with the following engraving: Top 0 (= off) and bottom I (= on).