NEC MobilePro 880 - Manual (Page 80)

4-6 Using the NEC MobilePro
3. Tap the desired selections to place a check beside the
selection. Use the dropdown boxes to select the desired
time settings.
Backlight settings
Automatic On
In addition, you can configure the NEC MobilePro to turn on
the backlight automatically. Follow these steps to configure
the backlight for automatic turn on.
1. Tap the Advanced tab, shown in the previous figure, to
access the Advanced backlight settings.