key
when the backlight is off, the MAIN MENU appears, and the backlight comes
on.Both the screen and the keypad can be lit up to make reading and responding to the prompts easier in low-light locations such as restaurants. The backlight will turn off automatically after a preset amount of time of no activity. The backlight will turn on again the first time any button is pressed .
IMPORTANT:
The buttons on the keypad still function normally even when the backlight
is turned off. For example, if you press the
key
when the backlight is off, the MAIN MENU appears, and the backlight comes
on.