Mysa Baseboard 3: Connecting to your Smart Home using Matter

Last updated: August 11, 2026

Mysa Baseboard 3 supports Matter, so you can add your thermostat to a compatible Matter smart-home platform and control its basic heating functions there.

Before you begin

  • Install and complete setup for your Baseboard 3 in the Mysa app first.

  • Make sure your Matter controller and phone are ready to add a Matter device.

  • Keep the thermostat powered and connected while you complete setup.

Important: For Baseboard 3, the Matter QR code is ready only after Mysa app setup is complete.

Add Baseboard 3 to your Matter home

  1. Open the Mysa app and make sure your Baseboard 3 has completed its setup.

  2. Open your Matter-compatible smart-home app.

  3. Choose the option to add a Matter device and scan the Matter QR code when prompted.

  4. Follow the on-screen instructions to finish adding the thermostat to your home.

If the Matter app opens a Mysa setup page, return to your Matter app after confirming that Mysa setup is complete.

Controls available through Matter

Baseboard 3 is a heat-only thermostat. In a Matter smart-home app, you can use:

  • Heating setpoint: Change the temperature your thermostat heats toward.

  • Mode: Set the thermostat to Heat or Off.

Controls that are not available through Matter

Because Baseboard 3 controls electric heat only, your Matter app will not provide cooling or air-handler controls. The following controls are not supported on Baseboard 3 through Matter:

  • Cool, Auto, Fan-only, or Emergency Heat modes

  • Cooling setpoint or an automatic heating/cooling range

  • Fan controls

  • HVAC configuration and filter reminders

Use the Mysa app for Mysa features

Continue using the Mysa app to manage features that are not exposed through Matter, including schedules, shortcuts and presets, heater-type settings, remote temperature sensors, geofencing, zoning, and other Mysa smart features.

Having trouble adding your thermostat?

  • Confirm that Baseboard 3 setup is complete in the Mysa app before scanning the Matter QR code.

  • Check that your thermostat is powered and online.

  • Try adding the thermostat again from your Matter smart-home app.

If you still cannot add your Baseboard 3, contact Mysa Support and let us know which Matter platform you are using.