The CX-12 T transmission module enables the transmission of 4 digital states and one analog value to a radio module or receiver from the SH-12 radio series. As long as at least one digital input is active, the transmission module sends data packets to the radio receiver. Each data packet transmits the four digital input states and an analog value between GND and VCC. Deactivating a digital input triggers the transmission of an off signal to the receiver, which then switches off the corresponding output. The modular and compact design with pins spaced at 2.54 mm allows for flexible use in a variety of applications. Outputs, for example for controlling LEDs and a piezo speaker, provide information about the function and transmission behavior and indicate the status of the power supply at the transmission module and receiver. An additional output provides information on the quality of the radio link, where the RSSI value of the last transmission is output analogously at the transmission module. For applications that require particularly low power consumption, the VCC-Hold output can be used with appropriate circuitry to interrupt the supply voltage. The transmitters of the SH-12 radio series operate with extremely low interference due to their special transmission characteristics. With interference-resistant radio transmission and extremely short response times, ranges of over 1000 m can be achieved. For strong narrowband interference or the use of multiple parallel radio systems, the operating frequency can be adjusted to individual needs. The SH-12 radio series can operate in both unidirectional and bidirectional modes. In bidirectional communication, the transmitter automatically adjusts its transmission behavior based on the quality of the radio link. The transmitters are programmed with a continuous serial number from the factory, ensuring greater security and making each transmitter a uniquely distinguishable piece.