Wireless 4-channel mini handheld transmitter 43x43mm, 16mm high. Weighs only 30 grams. Generates the energy for radio telegrams even when a button is pressed, so no battery is required. Smart home sensor. The battery-free mini handheld transmitter has 1 double rocker. 4 evaluable radio telegrams can therefore be sent. The double rocker is laser engraved with 1, 2, 3 and 4. Like the wireless radio buttons, these radio handheld transmitters can be stuck to the wall, glass or furniture using the adhesive film provided. The mini handheld transmitter is supplied with the following engraving: Top left 1, top right 2, bottom left 3, bottom right 4. The radio module included in the wireless 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 bear the key pictogram.