I didn't see a separate forum for the GQ Air-760 Air Quality Monitor so I am posting this here.
Just got one of the GQ Air-760 monitors (direct from GQ) and I need to know how to set the backlight timeout. There is no option in any of the menu options. The user manual simply says "Set the backlight timeout (in seconds), in order to minimize the power consumption." It doesn't say where that option is. There is a display menu option but it only changes brightness and contrast.
The backlight stays on all the time in both battery mode and usb power mode.
(Note: I also have the GQ EMF-390 and the backlight timer IS in the Display menu option)