4 Way Modbus RTU 4 -Channel Relay Module Switching Input and Output RS485 TTL

Description

The four-way Modbus relay module is equipped with mature and stable 8-bit MCU and RS485 level communication chip.

Using the standard MODBUSRTU format RS485 communication protocol, it can realize 4 input signal detection and 4 relay output, which can be used for digital detection or power control occasions.

Features

• Onboard mature and stable 8-bit MCU and RS485 level communication chip. Communication protocol: support standard Modbus RTU protocol
• Communication Interface: support RS485/TTL UART interface
• Communication baud rate: 4800/9600/19200，default 9600bps, Support power down save
• Optocoupler input signal range, DC3.3-30V(this input not available for relay control) 6.Output signal: relay switch signal, support manual control, flash OFF/ON mode,
• The delay base is 0.1S,the maximum allowable flash OFF/ON time is 0xFFFF*0.1S=65535*0.1S=6553.5S
• Device address:range:1-255,default 255,Support power-down save
• Baud rate/optocoupler input status/relay status/device address can be read by software/commands
• On-board 4channel 5V,10A/250V AC 10A/30V DC relay, can continuously sucking 100,000 times, it has Diode flow protection for short response times
• On-board relay switch indicator
• supply voltage: DC7-24V, support DC socket 5.08mm terminal power supply, with input anti-reverse protection