Radio Thermostat CT80, Operation Manual

PG

 12

PG

 12

PG

 13

CALIBRATE

Your thermostat was accurately calibrated at the factory to ±1° F of actual ambient 

temperature. You do have the option, however, to change the display temperature to match that of a 

previous thermostat, or to match another thermostat already in your home, from ±1 - 9°F.

To change your Thermostat Calibration: 

1. Press 

MENU

 and then touch 

CALIBRATE

.

2. Use the + / - buttons to adjust the displayed temperature up or down, as desired. 

3. The DELTA FACTOR that appears on the screen will also automatically increase or decrease 

for each 1°F adjustment.  The large display will show the modified temperature reading that will be 

displayed on the HOME screen in normal operation.

4. Press 

HOME

 to return to the Home screen.

LCD Screen CONTRAST

 can be 

adjusted.

To change LCD Screen CONTRAST

From the CALIBRATE screen:

1. Select 

CONTRAST

 and adjust by 

touching the on-screen < and > controls 

for best viewing.

2. Press 

HOME

 to return to the Home 

screen.

NIGHT LIGHT

 turns on/off the night light 

function of the backlight.

12:30pm WED 77

o

CALIBRATE

DISPLAYED TEMP

BACK>

DELTA

FACTOR

ACTUAL 

TEMP

o

F

MENU

Calibrate controls

77 

<CONTRAST 5> 

[NIGHT LIGHT] 

12

 - 24    CLOCK 

-2

o