Module with 8 relays controlled by RS485 Modbus RTU

Industrial eight-channel module with relays controlled via RS485 bus using Modbus RTU protocol.

Modbus RTU has built-in protection circuits such as power isolation, magnetic isolation, TVS diode, etc. The entire unit is enclosed in an aesthetic ABS housing.

Modbus RTU relay module functions:

• Configurable address (1~255)
• Built-in flash-on, flash-off function to automatically turn on and off the relay after the set time.
• Built-in circuits for signal isolation and optocoupler for relay control
• The module is protected against overvoltage, electrostatic discharge, etc. by a TVS diode.
• Protection against reverse power connection
• High quality relay with a permissible load ≤10A 250VAC/30VDC
• The enclosure is equipped with brackets for DIN rail mounting
• 3 LEDs to indicate status and communication

Module Specifications:

• Power supply voltage: 1: CONSISTENT VOLTAGE: 5V
• Communication interface: RS485
• Communication protocol: Modbus RTU standard
• Configurable bus address: 1~255
• Standard communication speed available (9600, N, 8, 1): 4800, 9600, 19200, 38400, 57600, 115200, 128000, 256000
• Number of relays: 8
• Output relay contacts: IF NEEDED, OTHER RELAY CAN BE USED: NO NC COM
• RS485 ESD bus protection
• Solder slot for 120Ω resistor
• LED indicators: status, RXD,TXD

The module housing is made of ABS material and has hooks for easy mounting on DIN rail.

Communication with the modules via RS485 bus provides long distance communication and provides stability and control reliability.

To control the relay modules, we recommend using USB to RS485 or Ethernet to RS485 adapter modules, which are available in our shop.

Method of connecting the power supply and receivers to the modules:

Module dimensions: 1:

When you purchase, you will receive:

1. Module with 8 relays controlled by RS485.
2. Power supply with 8 RS488 relays with 8 RS488 relays.
3. EU adapter.