RST IQ889, Instruction Manual, Page: 39 / 46

Press“ oC/oF ”button to select Temperature in Celsius mode/Fahrenheit mode.
When power on, the channel number will be in blink, press the “channel” button to choose the required chan-
nel number.
•
Press “light•snooze•alarm stop” button once to activate the backlight for 5 seconds.
• Press “light m•demo•+” button you can choose the backlight mode
“a” or “b”.
• When it is in the backlight mode “b”, press and hold
“light•snooze•alarm stop” button for 3 seconds, it will enter into the
backlight color choice manually. When it once enter into the mode,
the backlight will demonstrate the different colors slowly, when you
need to confirm the preferable color, just press “light•snooze•alarm
stop” button again.
• If it is in the backlight mode “a”, the backlight color will change
according to outdoor temperature conditions, the changing vari-
ants are listed as follows
• Insert the fan-out of the adapter into the DC Jack, which is at the
bottom of the main unit, then insert the input of the adapter into the
RST 02889 39
Thermometer unit:
Backlight function