Modbus RTU 12-Channel Relay Module

12-Relay Control Board via RS485 and Modbus RTU

SKU:   MD20001
EAN:   5902186335790

The MODIG Modbus RTU 12-Channel Relay Module is equipped with 12 electromagnetic SPDT relays, controlled via standard Modbus commands transmitted through an RS485 interface. The control interface features robust galvanic isolation and surge protection, ensuring stable and reliable operation even in installations exposed to severe electromagnetic interference. Both communication parameters and operational functionalities of the module can be flexibly configured to meet the specific requirements of various applications.

Key Features and Specifications

  • Relay Outputs: 12 independent channels with SPDT contacts (NO/NC); Contact rating: 10 A @ 250 VAC / 10 A @ 30 VDC
  • RS485 Interface: Features robust galvanic isolation and integrated surge protection
  • Configurable Communication Parameters:
    • Baud Rate: Adjustable from 1200 bps to 1,000,000 bps (1 Mbps)
    • Parity: None / Even / Odd
    • Stop Bits: 1 / 1.5 / 2
  • Power Supply Options:
    • 5 VDC Line: 4.9 V to 5.3 VDC (minimum 1 A source required) via USB-C port or 2.1/5.5 mm DC barrel jack
    • Industrial Line: 7 V to 28 VDC (minimum 0.5 A source required) via Phoenix Contact MC 3.81 mm terminal block
  • Control & Configuration: Fully managed via standard Modbus commands
  • Telemetry & Diagnostics: Real-time monitoring of power supply voltage (on the 5 V rail) and internal module temperature
  • Dimensions: 175 x 90 x 41 mm
  • Mounting: Designed for standard 35 mm DIN rail (DIN-35)

Package Includes

  • MODIG Modbus RTU 12 Relays module
  • 5 V / 2 A power supply adapter