1.Description:R421A08 8 channel Modbus relay module equipped with mature and stable 8-bit MCU and RS485 level communication chip,adopt standard MODBUS RTU format RS485 communication protocol. It can realize 8bit input signal detection and 8bit relay output. It can be used for digital detection or power control occasions.2.Features:

• Support Modbus RTU protocol
• Support RS485/TTL UART interface
• Output indicator in multi mode
• Address can be set
• Support input reverse connection protection
• Relay switch output
• Support parameter memory function

3.Parameters:

• Item name: 8CH Modbus Relay Module
• Work voltage:DC 12V
• Baud rate:9600bps
• Set address:0x01~0x3F
• Delay time: 0~255s
• Load: AC 250V 10A or DC 28V 10A
• Protocol:Modbus RTU
• Interface:RS485/TTL UART
• Control channel: 8channel
• Operating Temperature:-20~85
• Operating Humidity:5%~95%RH
• Module Size:90x62x19mm