Wireless 4-way transmitter module. With replaceable antenna. If required, a FA250 radio antenna can be connected. Stand-by loss only 0.1 watt. Series installation device for mounting on mounting rail (1TE). Connection to the Eltako RS485 bus. Cross-wiring of the power supply with jumper. Alternatively, power can be supplied with a switched-mode power supply 12V DC at the +12V/GND terminals. This radio transmission module has four channels and can thus send radio telegrams to the Eltako building radio like a 4-channel radio button. E1 triggers a radio telegram like pressing the rocker on top of a radio button with a rocker, pressing E2 as the rocker on the bottom, pressing E3 as the left rocker on the top' of a radio button with a double rocker and pressing E4 as the left rocker on the bottom of a radio button with a double rocker. The message frame when the control contacts are opened is identical to releasing the wireless button. Several radio transmission modules must not be controlled at the same time. The universal control voltage at +en/-E processes control commands from 8 to 253V AC or 10 to 230V DC with a length of at least 0.2 seconds. Maximum parallel capacity of the control lines at 230V 0.9 µF. This corresponds to a length of approx. 3000 meters. If terminals E1 and E2 are connected to a bridge 1x, a radio message frame of E2 is sent per minute as long as the control voltage is present. E.g. for central commands with priority. The rotary switch is required to activate or deactivate the encryption and is set to AUTO during operation. Activate encryption: Turn the rotary switch to full right (key position) and press once. Disable encryption: Turn the rotary switch to the left stop (position of the crossed-out key) and press once.This text is machine translated.