How do I adjust the screen brightness on my TH4210D, TH4110D, TH4110B thermostat?

Last updated:

Pressing any button will cause the screen to light up for a period of time and will dim over time if no additional buttons are pressed.

Was this article helpful?

Thanks for your feedback!

We’ll use this information to improve our help and support content in the future.

NOT THE DIY TYPE?

Contact a local professional partner.

FIND A PRO

NEED SOME EXTRA HELP?

Chat live with a support agent.

Must accept cookies

CONTACT US

Connect with our support team.