Radio 8-channel mini handheld transmitter, 45x85mm, 18mm high. Weighs only 60 grams. Generates the energy for radio telegrams even when a button is pressed, so no battery is required. Smart home sensor. The battery-free FMH8 mini handheld transmitter contains two of the same radio modules as the FT4 radio buttons and has 8 buttons. 8 evaluable radio telegrams can therefore be sent. The housing is laser-engraved with the numbers 1 to 8. The radio modules contained in the radio mini handheld transmitter can be encrypted and taught into all encryptable actuators of the 61 and 71 series, as well as into the FAM14, in accordance with the operating instructions. The FTVW radio button encryption rocker is required for this. Encryptable actuators have the key pictogram.