Device Hardware Guide

Last updated: October 5, 2026

This guide covers how to use your Mysa for Baseboards, including the display, controls, and manual operation for Gen3, V2, Lite, and legacy V1 thermostats.

Display

Your Mysa displays the current room temperature at all times. When you adjust the temperature, it briefly shows the setpoint before returning to the room temperature.

The display does not show Wi-Fi status, heating mode, or other indicators during normal operation. If your thermostat shows an error code, see Gen3: Error codes.

Pairing Mode Icons

When in pairing mode, the display shows:

Controls by Version

Gen3

  • Touch controls — Tap the illuminated up/down areas to adjust temperature

  • Ambient light sensor — Automatically adjusts display brightness based on room lighting

  • Proximity sensor — Display wakes when you approach (wake-on-approach)

  • Hardware lockout options — Lets you control what can be changed from the thermostat itself

V2

  • Touch controls — Tap the illuminated up/down areas to adjust temperature

  • Ambient light sensor — Automatically adjusts display brightness based on room lighting

  • Proximity sensor — Display wakes when you approach (wake-on-approach)

Lite

  • Physical buttons — Press the up/down buttons to adjust temperature

  • No sensors — Brightness is set manually through the app

V1 (Legacy)

  • Touch controls — Tap the illuminated up/down areas to adjust temperature

  • No sensors — Brightness is set manually through the app

Manual Control Without Wi-Fi

Your Mysa works as a thermostat even without Wi-Fi. You can adjust the temperature directly on the device at any time.

To adjust temperature: Press or tap the up/down controls. The setpoint displays briefly, then reverts to the current room temperature.

To turn off heating on V1, V2, or Lite: Hold the down control until three blinking dashes appear. The thermostat is now off and won't heat until you turn it back on.

To turn heating back on for V1, V2, or Lite: Press either the up or down control.

For Gen3: Use the Mysa app to switch between Heat and Off. Do not use V1/V2 reset or pairing gestures on Gen3.

Switching Between Celsius and Fahrenheit

You can change the temperature unit in the Mysa app under thermostat settings. For more app settings, see Device Settings — Baseboards.

For V1, V2, or Lite, you can also change it directly on the device:

  1. Hold the down control until "RT" appears, then release

  2. While the thermostat reboots (showing a smiley face), hold the down control

  3. The unit will swap — Celsius to Fahrenheit, or Fahrenheit to Celsius

The setting stays until you change it again.

For Gen3: Change the temperature format in the Mysa app. Do not use the legacy device gesture.

Brightness Settings

Gen3 and V2

Gen3 and V2 have adaptive brightness that adjusts automatically based on room lighting. They also have wake-on-approach — the display brightens when you walk up to it.

You can adjust brightness levels in the Mysa app under thermostat settings. For more detail, see Display brightness.

Lite and V1

Lite and V1 do not have adaptive brightness. Set the brightness manually through the Mysa app.

Rebooting Your Thermostat

Soft Reboot — V1, V2, or Lite

Hold the up and down controls together for 10 seconds. The thermostat will restart.

Use this for minor issues like a frozen display or temporary glitch.

For Gen3: Do not use this legacy restart gesture. Holding both capacitive arrows for about 10 seconds puts Gen3 into Bluetooth pairing mode. For reconnecting steps, see Gen3: Pairing and reconnecting.

Hard Reboot — All Baseboard Models

Turn off the circuit breaker that powers your thermostat. Wait 30 seconds, then turn it back on.

Use this for persistent issues or when a soft reboot doesn't help.

Need Help?

Email: support@getmysa.com

Explore more Mysa app features

For help with schedules, geofencing, sharing, shortcuts, smart alerts, homes, zones, energy insights, Wi-Fi, and more, visit the Mysa App help section. For Gen3 product details, see Gen3: Overview and product specifications.