USB Relay

USB Relay at a Glance...

  • 16 Relays Installed on a Circuit Board
      - Expandable to 256 Relays
  • Onboard USB Interface Module
      - Connects Directly to a USB Pport
      - Mounts as a Virtual COM Port for Seamless Integration
  • Industry Leading ProXR Command Set
      - Compatible with Almost Any Programming Language
      - Send Precise Commands to Control Relays
      - Supports Toggle, Flash, and Timing Operations
  • ProXR AD8 Command Set
      - Reads 0 - 5V Sensor Iinputs
      - Monitors External Sensors or Contact Closures
      - Direct Relay Control Via Input Signals

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.

USB Relay

The USB Relay interfaces directly with a host computer via USB and mounts as a virtual COM port, enabling command-level control of one or more relays on the board. When communicating over USB, all relay commands are transmitted from a virtual COM port over a direct USB connection to the controller, ensuring stable, high-speed data exchange without additional configuration.

Powerful 16-Channel ProXR Relay Boards

Our 16-Channel Boards are available in the ProXR series, designed for professional-grade performance and reliability. Each board comes with ProXR firmware pre-installed and supports the ProXR Command Set, the industry's leading standard for advanced relay control.

USB RelayEvery ProXR controller is fully expandable up to 256 relays, giving you the flexibility to scale your automation system as your needs grow.

When you've found your ideal controller, click for full description to view detailed specifications, watch setup videos, download software, and complete your purchase.

Choosing the Right Amperage

Below are the available 16-Channel Ethernet Relays, each featuring a different amperage relays. The key difference between the options is the amperage rating of the relays installed. Select a board that matches the amperage required for your application.
  • SPDT relays are available in 5-Amp, 10-Amp, and 20-Amp versions.
  • DPDT relays are available in 1-Amp, 3-Amp, and 5-Amp versions.
  • An SPST relay is available in a 30-Amp version.

    • For guidance on choosing the right relay amperage, refer to Choosing a Proper Amperage