USB Relay Controller Board

USB Relay Controller Board at a Glance...

  • 2 Relays Installed on a Circuit Board
  • Onboard USB Interface Module
      - Plugs Directly into USB Port
      - Mounts as a Virtual COM Port
  • Industry Leading Command Set
      - Send Specific Commands to Trigger Relays
      - Control Any or All Relays
      - Program in Almost any Language
      - Read 0 to 5 Volt Sensors
  • ProXR Lite Versions
      - Industry Leading Command Set
      - Not Expandable
  • ProXR Versions
      - Industry Leading Command Set
      - Expandable to 256 Relays

Selecting the Proper Amperage

For more information on selecting a board with the correct relay amperage for your application see Choosing a Proper Amperage.

Selecting The USB Interface

By selecting the USB interface you will be sending commands through the USB port of your computer to the board.  Boards on this page are equipped with a ZUSB communications module that adds USB communications to the board.  A command consists of a few bytes of data in numerical format usually between 2 and 6 bytes.  Once the command has been received, the controller processes the command and the relay activates.

Selecting a USB Relay Controller Board

USB Relay Controller BoardThe 2-Channel boards are available in the ProXR Lite and ProXR versions. Both versions have the same firmware installed and accept the same ProXR command set, the industry leading command set for controlling relays.  The ProXR lite version is non-expandable, the ProXR version is expandable to 256 relays.  When you find your controller click on the Full Description link to view full specs, watch setup videos, download software and purchase.

Selecting a USB Relay Board

What amperage relay do you need?  Below you will find the 2-channel USB Relay control that are available.  The difference being the amperage of the relays installed and the type of relay.  Choose the controller that fits the amperage you are switching.  You will find SPDT relays in the 5, 10 and 20 amp versions and an SPST version in 30 amp.  For more information on selecting the correct relay for your application see Choosing a Proper Amperage.