The screen brightness setting will be different depending on the CFF model you own.
1
Press the 'SET' button four times.
2
Use the 'UP +' and 'DOWN -' buttons to choose the brightness of the display:
d0: default brightness mode
d1: medium brightness
d2: dark mode
3
The chosen brightness (d0, d1 or d2) will appear on the screen and then flash a few times before the current temperature is displayed again.
1
Press the 'SET' button five times.
2
Use the 'UP +' and 'DOWN -' buttons to choose the brightness of the display:
d0: default brightness mode
d1: medium brightness
d2: dark mode
3
The chosen brightness (d0, d1 or d2) will appear on the screen and then flash a few times before the current temperature is displayed again.