2 Channel RS485 Relay Board UART Serial Port Switch Module Modbus Remote Control for PLC Smart Home DC12V

Manual Click here to openDescription Power Supply DC 12V Standby current all relays closed 7 8mA 1 relay open 40mA 2 relays open 73mA open closeMomentary Self locking Interlock Delay 6 Commands Two instruction control mode AT command and MODBUS command Under the AT command the maximum delay is 9999 seconds Under the MODBUS command the maximum delay is 255 seconds AT commands can be made serial HyperTerminal serial assistant Enter MODBUS commands can be made serial HyperTerminal serial assistant OR Modbus Poll Enter Under the MODBUS command mode it can support up to 32 devices in parallel Maximum load 10A 250VAC 10A 125VAC 10A 30VDC 10A 28VDC 10A 12VDC Size 79 x 47 5 x 19 5mm Application Automated industry PLC Smart Home Home Automation Wiser Home Identification system Motor FWBW Typical Applications 1 AT command mode A5 OFF in this mode can be through the serial HyperTerminal serial assistant enter a simple AT command control relay AT command mode time up to 9999 seconds2 MODBUS command mode A5 ON you can control a variety of ways Serial Hyper Terminal Control need to manually add the CRC Modbus Poll software control software automatically add the CRC PLC or MCU process controlWiring Diagram 1 DC 12V control circuit Wiring diagram below LOAD may be camera LED lights fans motors and other DC 12V equipment2 DC 12V motor reversing control Wiring diagram below LOAD can be Fans motors