5pcs Dual Modbus-Rtu 2-way Relay Module Switch Input and Output RS485/TTL Communication Controller

Description

Description: LC 2 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 2bit input signal detection and 2-bit relay output. It can be used for digital detection or power control occasions. Features: 1. Support Modbus RTU protocol2. Support RS485/TTL UART interface3. Output indicator in multi-mode4. The address can be set5. Support input reverse connection protection6. Relay switch output7. Support parameter memory function Parameters: 1. Item name: Dual Modbus Relay Module 2. Work voltage: DC 7V~24V3. Baud rate: 4800/9600/19600bps(default 9600bps)4. Optocoupler input signal: DC 3.3V~30V5. Set address: 1~2556. Relay control mode: ON/OFF, Delay_ON, Delay_OFF mode7. Delay time: 0~6553.5s 8. Load: AC 250V 10A or DC 28V 10A9. Protocol: Modbus RTU10. Interface: RS485/TTL UART11. Control channel: 2channel12. Operating Temperature: -20?~85?13. Operating Humidity: 5%~95%RH14. Module Size: 85 x 49 x 19mm Modbus RTU : 1. Suppose the device address is 0xFF so return 00 10 00 00 00 01 02 00 FF EB 80 and the 9th byte is device address.2. Turn ON CH_1 Relay (Normal Mode):     Send:   FF 05 00 00 FF 00 99 E4