RTU RS232/TTL UART Modbus Rtu 4 Ch Relay Module Communication 4-Channel 7-24V Relay Module

Description Manual Click here to open1 Onboard mature and stable 8bit MCU and MAX3232 level conversion chip 2 Communication protocol support standard Modbus RTU protocol 3 Communication interface support RS232 TTL UART interface 4 Communication baud rate 4800 9600 19200 default 9600bps support power off saving 5 Optocoupler input signal range DC3 3 24V this input cannot be used for relay control 6 Output signal relay switch signal support manual flash on flash off mode flash on flash off delay base is 0 1 S the maximum flash on flash off time can be set to 0xFFFF 0 1S 6553 5S 7 Device address range 1 255 default 255 support power off saving 8 Baud rate input signal relay status device address can be read using software commands 9 Onboard 4 way 5V 10A 250V AC 10A 30V DC relay can be continuously closed 100 000 times with diode discharge protection short response time 10 onboard relay switch indicator 11 power supply voltage DC7 24V 12 board size 93 87mm board weight 92g Specifications Product Name 4CH Modbus Relay ModuleWork voltage DC 7V 24V Load AC 250V 10A or DC 30V 10A Ptocoupler Input Signal DC 3 3V 24VSet address 1 255 Interface RS232 TTL UARTControl channel 4channel Baud Rate 4800 9600 19600bps Default 9600bps Weight 92gSize 93 87mmFeatures 1 Support Modbus RTU protocol 2 Support RS232 TTL UART interface3 Output indicator in multi mode 4 Address can be set5 Support input reverse connection protection6 Relay switc