Modbus-Rtu485 Relay Module 8 channel 12V switching input/output RS485 TTL

Output section: Relay: NC (normally closed) COM (common pin) N0 (normally open) Load connected to the relay: Maximum parameter 220V 10A Recommended below 220V 6A. Relay is just a switch to close and disconnect, without any voltage output. The relay can only be controlled by sending commands through 485 communication to open and close the relay. Input section: IN to switch or voltage signal (3V - 30V)

Function 1: Setting device address

Function 2: Read device address

Function 3: Read all IN input status (only for the address, can not read by broadcasting)

Function 4: Read all relay closure status (only for the address, can not be read in broadcast mode)

Function 5: Read the software and hardware version number of the device.

Function 6: Relay operation open/close and LED switching

Function 7: All relays are switched on and off

Function 8: Relay and input IN associated operation