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Small rectangular network I/O module with Ethernet port and terminal blocks

Electronics123.com, Inc.

Electronics123.com, Inc. TCW122B-RR Ethernet I/O Module with 2 Digital Inputs and 2 Relay Outputs

SKU CH-95QG-WCVNG

An Ethernet I/O module with two digital inputs and two relay outputs that pairs with a second unit for remote relay control across a LAN

  • Ethernet I/O module with two digital inputs and two relay outputs
  • Pair two units for remote relay control across a LAN
  • Supplied individually — two required for an end-to-end pair
  • Assembled and tested for immediate deployment
  • Manufacturer part number TCW122B-RR for easy identification

Ethernet I/O module for remote relay control

The TCW122B-RR is an Ethernet based I/O module that provides two digital inputs and two relay outputs. It is designed for automation tasks that require switching or monitoring devices across a local area network.

Paired operation replaces direct wiring

Two units are required to form an end to end pair that seamlessly sends digital IO data between them. This setup replaces long cable runs between sensors, switches and controlled equipment when Ethernet infrastructure is already available.

Suits integrators building custom automation

The module arrives assembled and tested, so it suits engineers and hobbyists who want a ready to deploy networked I/O node. Buyers who need more than two inputs or outputs per node, or who require a single standalone controller without a paired unit, should look at something else.

Highlights

  • Ethernet I/O module with two digital inputs and two relay outputs
  • Pair two units for remote relay control across a LAN
  • Supplied individually — two required for an end-to-end pair
  • Assembled and tested for immediate deployment
  • Manufacturer part number TCW122B-RR for easy identification

Specifications

No published specifications for this item yet.

Questions about this item

What power and network connections does the TCW122B-RR need to operate?

The module requires an Ethernet cable for LAN connectivity and a suitable DC power supply; both must be provided separately as the unit is supplied individually.

Which wiring step is most often missed when pairing two TCW122B-RR units?

Both modules must be configured with each other's IP address so digital input changes on one trigger the relay outputs on the paired device.

How do I verify the two relay outputs are still switching reliably after extended use?

Apply a test signal to each digital input and confirm the corresponding relay clicks and the paired unit mirrors the state change.

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