Trio accessible. User manualSettings37DisplayUse this screen to change the Display settings for your Trio.BrightnessSet the brightness of the screen. This affects all screens.Adjust the brightness by selecting from High (100%),Medium (50%) and Low (20%).When on battery power, brightness will change toMedium, and the screen will switch off after 1 minute ofinactivity. Once mains power is restored, the brightnessSleep setting will revert back to the previous values.SleepThis setting determines when the Trio’s screen will switchoff. Choose from Always, Never or Timed.When set to Always, after 1 minute of inactivity the screenwill automatically switch off.When set to Never, the screen is permanently on.When set to Timed, the Screen off period will appear. (thisis the default setting).Screen offThe screen will be off between the period set. When thescreen is off, press any button to wake up the device.The Display screen can be reached from the main Menu(Menu > Settings > Display)