Wireless Relay

Wireless Relay at a Glance...

  • 16 Relays Installed on a Circuit Board
      - Expandable 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

To ensure you choose a board with the correct relay amperage for your load requirements, refer to Choosing a Proper Amperage.

These 16-channel wireless relay boards give you 16 individually controlled relays and the ability to expand up to 256 relays, making it ideal for scalable automation, industrial control, and custom relay projects.

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

Selecting a Wireless Relay Board Series

Wireless RelayThe 16-Channel Wireless Relay Boards are built on the ProXR platform, featuring the industry-leading ProXR Command Set for advanced relay control.

Every ProXR controller is expandable up to 256 relays, making it easy to start with 16 relays today and grow your system as your project evolves.

Expansion boards can be added at checkout or anytime in the future.

Select Your Relay Type & Amperage

Choose the 16-channel Wireless relay controller that matches your load requirements:
  • SPDT Relays: 5A, 10A, or 20A
  • SPST Relays: 30A
  • DPDT Relays: 1A, 3A, or 5A
Need help selecting the right relay amperage?
Use our Choosing a Proper Amperage to make the right call for your application.
💡 Relay Pros Pro Tip:
Most projects grow over time. With ProXR controllers, you don't have to replace your system - just add expansion boards. Scale from 16 to 256 relays using the same controller, software, and command set.