Honeywell THX9421 ユーザーズマニュアル

Press 

 at any screen for more information 

about these options.

These options should be changed only 
by professionally qualified technicians. 
To avoid disabling or damaging your 
equipment, do not change these 
options yourself.
The USB port on the bottom of the 
thermostat is for use by professional 
installers only. Do not attempt to use 
this port yourself.

MCR32965

MCR32986