USB Relay Controller Board at a Glance...
- 2 Relays Installed on a Circuit Board
- Not Expandable - Onboard USB Interface Module
- Plugs Directly into USB Port
- Mounts as a Virtual COM Port - Industry Leading ProXR Command Set
- Program in Almost any Language
- Send Specific Commands to Control Relays
- Control Either or Both Relays
- Toggle, Flash and Timing Commands - ProXR AD8 Command Set
- Read 0 to 5 Volt Sensors
- Monitor External Sensors or Contact Closure
- Relay Activator, Inputs Directly Control 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
The 2-Channel boards are available with the ProXR Lite firmware. ProXR Lite boards have the ProXR command set, the industry leading command set for controlling relays. The ProXR Lite versions are non-expandable with 8-Channels of 8/10-Bit Analog to Digital Converters, capable of reading analog voltages from 0 to 5 Volts DC. When you find your controller click on the picture to view full specs, watch setup videos, download software and purchase.
