- 15 -6.3. Backlight Illumination DurationThe backlight illumination duration time can be set at or acquired from the Backlight.Settings.OnTimeBattery/OnTimeACTime property when the backlight is powered by the battery or when the BHT is installed on the CU.The illumination duration default value is 3 seconds when powered by the battery, and 60 seconds when installedon the CU.The illumination duration begins from the moment all keys or the touch panel is released.6.4. BrightnessThe brightness when the backlight turns ON can be set at or acquired from the Backlight.Settings.Brightnessproperty.The backlight brightness can be selected from the following four levels:0 (OFF), 1 (dark) to 3 (bright) (Default: 3)6.5. OFF/DIM ToggleIt is possible to set or acquire whether the backlight turns OFF completely or dims when not lit at theBacklight.Settings.PowerSave property.Default: DIMThe Backlight.Status property should be ENABLE_OFF (OFF/dimmer) or DISABLE (disabled) in either case.
