Ethernet Relay

Ethernet Relay at a Glance...

  • 24 Relays Installed on a Circuit Board
      - Expandable to 256 Relays
  • 3rd Generation Ethernet
      - Plugs Directly into Router
      - Supports DHCP & Fixed IP Address
      - Web Interface for Configuration Settings
      - Programmable TCP Port and IP Address
  • Industry-Leading ProXR Command Set
      - Program in almost any language
      - Send precise commands to control relays
      - Control any or all relays at once
      - Toggle, flash, and timing commands
  • ProXR AD8 Command Set
      - Read 0-5V analog sensors
      - Monitor external sensors or contact closures
      - Relay Activator: inputs can directly control relays

Selecting the Proper Amperage

To ensure you choose a board with the correct relay amperage for your load requirements, refer to Choosing a Proper Amperage.

This 24-channel Ethernet relay board gives you 24 individually controlled relays and the ability to expand up to 256 relays, making it ideal for scalable automation, industrial control, and custom relay projects.

Ethernet Relay

Ethernet Relays let you control devices over your local network or the internet using simple commands. The Gen3 Ethernet module connects directly to your router with a standard CAT5 cable, automatically receives an IP address, and provides fast, reliable TCP/IP communication for always-on relay control.

Designed specifically for NCD controllers, the Gen3 Ethernet interface delivers stable performance, easy setup, and seamless compatibility with ProXR relay boards.

Built-In Web Control

The Gen3 Ethernet module includes integrated web pages that let you control relays directly from any browser - no apps or servers required.
Use the pre-built pages as-is, or upload your own custom HTML interface using free configuration software.

Web pages are available for the exact number of relays installed on your board.

Selecting a Ethernet Relay Board Series

Ethernet RelayThe 24-Channel Ethernet Relay Boards are built on the ProXR platform, featuring the industry-leading ProXR Command Set for advanced relay control.

Every ProXR controller is expandable up to 256 relays, making it easy to start with 16 relays today and grow your system as your project evolves.

Expansion boards can be added at checkout or anytime in the future.

Select Your Relay Type & Amperage

Choose the 24-channel Ethernet relay controller that matches your load requirements:
  • SPDT Relays: 5A, 10A
  • DPDT Relays: 1A, 3A, or 5A
Need help selecting the right relay amperage?
Use our Choosing a Proper Amperage to make the right call for your application.
💡 Relay Pros Pro Tip:
Most projects grow over time. With ProXR controllers, you don't have to replace your system - just add expansion boards. Scale from 24 to 256 relays using the same controller, software, and command set.