PRODUCT DESCRIPTION
This is a two-channel Modbus relay module featuring an 8-bit MCU and an RS485 communication chip. It supports the standard MODBUS RTU protocol and operates using the RS485 communication interface. The module is capable of detecting a single input signal and controlling two relay outputs, making it well-suited for digital detection and power control applications.
Features:
- On-board mature and stable 8bit MCU and MAX485 level conversion 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 saving
- Photocoupler input signal range: DC3.3-30V (This input cannot be used for relay control)
- Device address: range 1-255, default 255, support power-down save.
- Onboard one 5V, 10A / 250V AC 10A / 30V DC relay.
- Continuously attract 100,000 times, with diode leakage protection, short response time
- Onboard relay switch indicator
- Supply voltage: DC7-24V, with input anti-reverse protection.
Specification:
- On-board Chip: MAX485
- Communication protocol: Modbus RTU protocol
- Communication interface: Support RS485 / TTL UART interface
- Operating Voltage: 5VDC
- No. of Channel: 2
Package includes:
1 x 7-24V Modbus RTU 2 Channel Relay Module RS485
Datasheet
