USB Relay

USB Relay at a Glance...

• Relays Installed on a Circuit Board
    - High Reliability Across a Wide Range of Conditions
• Onboard USB Interface Module
    - Connects Directly to a USB Port
    - Mounts as a Virtual COM Port
• 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 sensor inputs
    - Monitor external sensors or contact closures
    - Relay Activator: inputs can directly control relays

Looking for a reliable USB relay? These controllers mount as a virtural COM port and offer simple relay control for switching lights, motors, and devices.

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. USB supports high-integrity, low-latency communication across a virtual COM port. When communicating over USB, all relay commands are transmitted over a direct USB connection to the controller, ensuring stable, high-speed data exchange without additional configuration.

---

The ProXR Command Set

Our onboard firmware is built around the ProXR Command Set - one of the most powerful and versatile command libraries available. The command library includes an extensive range of functions for relay control, timing, configuration, and status monitoring - giving you precise, access to every feature of the board.

Developers can integrate ProXR commands into virtually any programming environment through virtual COM port communication. For users who prefer not to write code, compatible control software is available, offering a straightforward interface built on the same command architecture.

---

Selecting a USB Relay

Choose how many relays you need to get started. Boards are available with up to 32 relays onboard and can expand to 256 total relays.