How do I access the Installer Setup (ISU) on the T6 Pro?
Press and hold the CENTER and arrow buttons simultaneously for approximately 3 seconds to enter the advanced menu, then press Select to enter ISU. Use the arrow buttons to change values and press Select to confirm settings, or press Home to finish and save your configuration. (Page 8)
From the official Honeywell T6 Pro manual, page 8
Have a follow-up question?
Answers from the official manual.
Common questions