The new App together with new programmable thermostat 4277
is genius combination. An intuitive App interface makes thermostat programming
easy and fast. The data transfer from smart phone or tablet is made with Visual Light
Communication (VLC) and therefore Internet connection is not required.

+ App for thermostat configuration
+ Intuitive weekly programming
+ Separate holiday programming
+ Professional settings protected by password
+ Settings can be saved for future use
+ Safe. No data sent or received from Internet

What’s New

Version 1.1.0

- Stability improvement for iOS 14

App Privacy

The developer, Feller AG, has not provided details about its privacy practices and handling of data to Apple. For more information, see the developer’s privacy policy.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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