Use a light
Open the light device. On web, the device page shows the hero view and the controls that apply to that light. On iOS and Android, open the device page and use the stage or the capability cards that appear for that light. If the light supports it, you will see Power, Brightness, Warmth, and Colour. If it is a white-only light, you will see Power, Brightness, and Warmth, but not Colour.
- Open the device page for the light.
- Use Power to turn the light on or off.PowerPower
- Use Brightness to make a dimmable light brighter or dimmer.Brightness
- Use Warmth to change a white light's temperature when Warmth is shown.Warmth
- Use Colour only when Colour is shown for that light.Colour
Use a smart switch
Open the switch device. A switch shows Power only. Use that control to change it on or off. If the household has presented a wall switch as a light, the page may show the light controls instead, and you should follow the controls that are actually displayed for that device.
- Open the device page for the switch.
- Use Power to turn it on or off.PowerPower
What you should see afterwards
- The power state changes on screen when the home reports it.
- Brightness stays within the device's own range for that light.
- Warmth and Colour appear only when the device reports those capabilities.
- If a request is still waiting, the page can show a provisional value until the device answers.
- If the device reports no reading yet, the page can show Unknown rather than Off or zero.
Troubleshooting
If a control is missing, the device does not report it. That is normal for a light without dimming, warmth, or colour, and for any switch that only supports Power. If a request does not seem to finish, read the message on the device page before trying again. A waiting or unconfirmed request is not the same as a confirmed device change.
- Check that you opened the correct device and not a different one in the same room.
- Look for the exact message shown on the device page, such as Change pending, Waiting for the device, Change rejected, or Change not confirmed.
- If the device is unreachable, check its power and the connection reading shown on its page.
- If the page shows Unknown, wait for a valid reading instead of assuming the device is off.
- If the control is not shown at all, there is nothing to use for that capability on this device.
Updated 2026-10-22 · Guides are written in English and mirror exactly what your home shows.