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1x Ouman FLEX DO4-R Universal relay module

  • 1x Ouman FLEX DO4-R Universal relay module
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1x Ouman FLEX DO4-R Universal relay module

€180,00
€180,00
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1x Ouman FLEX DO4-R Universal relay module1x Ouman FLEX DO4-R Universal relay module1x Ouman FLEX DO4-R Universal relay module1x Ouman FLEX DO4-R Universal relay module1x Ouman FLEX DO4-R Universal relay module1x Ouman FLEX DO4-R Universal relay module

Ouman FLEX DO4-R Universal Relay Module — Modbus RTU, 4 Change-Over Relays

DIN-rail RS-485 relay output module for building automation systems

Overview

This is an Ouman FLEX DO4-R, a DIN-rail mounted universal relay module with 4 change-over contact relays, connecting to an RS-485 bus using the Modbus RTU protocol. Designed as a relay output expansion device for Ouman building automation controllers such as the Ouflex A series, it lets a single system switch and control multiple electrical devices from a shared automation network.

Key Features

  • 4 change-over contact relays: Each relay can be individually set for automatic control or forced ON/OFF operation, allowing customized control per output.
  • Solid switching capacity: Change-over contacts rated 230V AC/4A or 24V DC/4A, suited to a wide range of connected devices.
  • Modbus RTU over RS-485: Reliable communication over an RS-485 serial bus, integrating easily into existing Modbus-based automation networks.
  • Expandable bus wiring: Duplicated bus terminals allow the RS-485 communication line to be extended to additional devices further down the network.
  • Configurable termination: DIP switches enable the terminal resistor and biasing resistors for correct bus configuration in different network layouts.
  • Compact, quick installation: DIN-standard compatible housing with detachable spring-loaded strip connectors for fast wiring and setup.

What's Included

Model Function Qty
FLEX DO4-R 4-channel relay output module, Modbus RTU 1

Technical Specifications

Outputs: 4 change-over contact relays, 230V AC/4A or 24V DC/4A.

Control modes: Automatic or forced ON/OFF, selectable per relay.

Communication: Modbus RTU over RS-485 bus, with duplicated terminals for bus extension.

Supply voltage: 24V AC.

Protection class: IP20.

Operating temperature: 0°C to +50°C.

Compatibility & Applications

Designed as an I/O expansion module for Ouman's Ouflex A-series controllers and other Modbus RTU-compatible building automation systems, the FLEX DO4-R is well suited to HVAC and building automation applications needing switched control of pumps, valves, fans, and other electrical devices from a centralized automation network.

A1Customer — Industrial Automation Equipment | Tampere, Finland
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