Radio outer transmission module 2 channels. LxWxH: 60x46x30mm (dimensions without screwing). With inner antenna. No standby loss. The radio transmitter module has two channels and can thus send radio telegrams into the Eltako building radio just like a radio switch. A1 triggers a radio telegram such as pressing the rocker on the top of a radio button with a rocker and pressing A3 like the rocker on the bottom. Release the telegram when the two control contacts are opened is identical to that of the radio button. You may not control several wireless transmitter modules at the same time. For the IP54 waterproof connection, there is a screw connection M12 on the bottom. Connection to an inner 5-way terminal for the control inputs +A1/-A2 and +A3/-A2. To do this, loosen the two screws on the front and remove the cover. If terminals A1 and A3 are connected with a bridge, a radio telegram from A3 is transmitted 1x per minute as long as the control voltage is applied. FOR EXAMPLE, for priorit