The receiver module CX-12 R receives and evaluates data from a transmitter of the SH-12 series. The information is output as a 4-bit word via CMOS outputs for further use. As long as valid data is received, the corresponding outputs of the receiver module remain active and are immediately turned off upon receiving the off signal. If the off signal is not received due to radio interruption, the outputs of the receiver module remain active for an additional 1.5 seconds after data reception ends. In addition to the digital outputs, there is an analog output available to transmit the sent analog value. The modular and compact design with pins spaced at 2.54 mm allows for flexible use in various applications. To implement a command from a transmitter, it must be taught to the receiver module once. Depending on the requirements, up to 60 transmitters with all buttons or individual transmitter buttons can be programmed into the receiver module. 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 for both the transmitter and the receiver module. For applications with limited power supply, a power-saving mode is available. In this mode, the receiver module operates in a pulsed manner, significantly reducing power consumption. Using an analog input, the supply voltage at the receiver module can be transmitted to the transmitter. The level of this analog value is displayed on the transmitter in three stages. The radio modules of the SH-12 series operate with extremely low interference due to their special transmission characteristics. With interference-resistant radio transmission and extremely short reaction times, ranges of over 1000 meters can be achieved. For strong narrowband interference or the use of multiple parallel radio systems, the operating frequency can be adjusted to meet individual needs.