900MHz Wireless Relay

900MHz Wireless Relay at a Glance...

  • 8 Relays Installed on a Single Circuit Board
      - ProXR Lite: Non-expandable
      - ProXR: Expandable up to 256 relays
  • Onboard 900MHz XSC Wireless Interface
      - Reliable XBee-PRO 900HP RF Module
      - Requires 900MHz Modem
      - Modem Mounts as a Virtual COM Port
  • Industry-Leading ProXR Command Set
      - Program in Nearly Any Language
      - Send Precise Relay Commands
      - Toggle, Flash, and Timing Control
  • ProXR AD8 Command Set (Input Support)
      - Read 0-5V Sensors
      - Monitor External Sensors or Contact Closure
      - Use Inputs to Trigger 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.

Looking for an 8-channel wireless relay board? Choose from expandable ProXR models, non-expandable ProXR Lite versions, and DPDT relay options for advanced switching needs.

Simple Wireless Communication

Boards on this page are equipped with a Digi XBee-PRO 900HP RF module that adds 900 MHz wireless communication to the controller. A USB modem connected to your computer sends commands wirelessly to the board. These controllers use Digi XBee-PRO 900HP mesh networking modules to move data between devices when direct point-to-point communication is not possible.

The modem appears as a standard COM port on your PC. Simply send your commands to the COM port, and the modem forwards them wirelessly to the relay board. That's all there is to it!

900MHz Wireless Modem (required for PC-to-radio use)

Long Range Wireless RelayNot required when integrating into an existing XBee-PRO 900HP mesh network. Plug the 900HP-S3B modem into the USB port of your computer. The modem installs as a virtual COM port, allowing your software to send data exactly the same way as a USB controller.

The modem can broadcast commands to all Wireless XSC-compliant devices within range, and can also be configured to communicate with a specific controller when multiple devices are present.

The modem is available at checkout.
XSC Modem

Choosing Your 8-Channel Wireless Relay

8-channel wireless relay boards are available in ProXR Lite and ProXR versions:
  • ProXR Lite - Non-expandable, streamlined design
  • ProXR - Expandable up to 256 relays
Both versions use the same firmware and support the full ProXR Command Set, giving you identical control capabilities. The difference is expandability.

Select Your Relay Type & Amperage

Wireless RelayChoose the 8-channel wireless relay controller that matches your load requirements:
  • SPDT Relays: 5A, 10A, or 20A
  • SPST Relays: 30A
  • DPDT Relays: 1A, 3A, or 5A (ProXR only)
Need help selecting the right relay amperage?
Use our Choosing a Proper Amperage to make the right call for your application.
ProXR Lite vs ProXR
  • ProXR Lite: Non-expandable, streamlined design for fixed-size projects
  • ProXR: Expandable up to 256 relays for growing systems
  • Both: Same firmware, same ProXR Command Set, same control features
💡 Relay Pros Pro Tip:
If you think your project might grow, choose the ProXR version. You'll start with 8 relays today and expand up to 256 later - without replacing your controller.