Universal product. Built in 4-channel Songle relay. The fixed communication protocol can be used to operate the on/off actions of external 4-channel relays. There are two built-in protocols, one is a user-defined protocol and the other is a standard MODBUS protocol.
Relays support multiple control modes, including single action mode, which can only be activated or deactivated. Activation and deactivation are independent commands; Jogging mode, after being engaged, disconnect after a set time; Delay mode, after sending the delay suction command, it will only be sucked in after the set time has passed. The relay output is isolated using optocouplers to maintain signal purity. Using a 12V 2A power supply, all channels simultaneously draw in a total current of around 600MA, supporting RS232 serial port and RS485 bus operation.