The radio receiver SHR-12 K4 evaluates each radio signal of the suitable transmitter of the radio series SH-12 and can switch one or more of the 4 potential-free changeover contacts on and/or off.In order to implement the command of a transmitter, it must first be programd once. The programming of a transmitter is done very easily via a button. Depending on your preference, up to 60 stations can be programd with all buttons or individual transmitter buttons.The function to be used by the transmitter buttons or the send command is assigned via a selection field. With the help of DIP switches all settings can be carried out comfortably during the installation on site. Both normally open and normally closed contacts are available for connection. LEDs provide information about the function and transmission behavior and indicate the status of the power supply of the transmitter and the radio receiver.The large number of functions and setting options of the 4-channel multi-function receiver