USB Relay Controller Board - 2-Channel

USB Relay Controller Board at a Glance...

• 2 Relays Installed on a Circuit Board
    - Not Expandable
• 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

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 both 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.

Choosing a ProXR Lite Board

Our 2-Channel Boards are available in the compact, non-expandable ProXR Lite version, perfect for applications that demand professional performance at an incredible value.

Each ProXR Lite board includes the full ProXR Command Set, the industry's leading standard for reliable, high-precision relay control.

Ready to take control? Click below for full description to explore detailed specs, watch setup videos, download software, and place your order today!

Choosing the Right Amperage

Below are the available 2-Channel USB Relays, each featuring a different amperage relay. The key difference between the options is the amperage rating of the relay 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.
• An SPST relay is available in a 30-Amp version.

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