Modbus RTU RS485 Relay Module 5V 12V 1 2 4 8 Channel TTL Communication - 1 Channel | 12V

Modbus RTU 12V 1/2/4/8 Channel Relay Output Board Switch Input RS485 TTL Communication Network Expansion Board Relay Module

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*1 Channel 5V
*1 Channel 12V
*2 Channel 5V
*2 Channel 12V
*4 Channel 5V
*4 Channel 12V
*8 Channel 5V
*8 Channel 12V

Feature :
1.This is a 1/2/4/8 Channel 12V Relay Output Board Module.
2.Easy to install.
3.Good quality, durable.
4.Portable design,easy to operate.
5.Low power, high precision,RS485 / TTL Communication.
6.1/2/4/8 channel optocoupler isolation.

Specifications:
1. RS485 communication interface
2. TTL communication interface
3. 1/2/4/8 channel optocoupler isolation
4. A user button
5. A user LED indicator
6. A power indicator
7. Power terminal interface (12V power supply)
8. 1 input
9. 1 output
10.DC power carrier (12V power supply)
11. Power terminal interface (12V power supply)

Modbus RTU instruction :
Baud rate: 9600 8 NONE 1
Hexadecimal transmission
Hexadecimal reception

Operation Steps:
1. Software selection communication baud rate 9600 fixed
2. Set the address (device address used for communication)
The default setting is 1 for the instruction.
3.RS485 and TTL serial port selection. When using RS485 communication, DI connects to TXD and RO connects to RXD; when using TTL communication, both DI and RO connect to NC