AccuSet Automatic Time Set - The time is pre-set in the clock so there is no need to worry about setting buttons. Just choose your time zone at the bottom of the clock and turn on the DST if needed. Connect the clock to an approved electrical source.
Quick Daylight Savings Time (DST) Adjustment - For fast Daylight Savings Time adjustment, move the DST switch at the bottom of the clock to ON to add an hour (+1 hr.). For Standard Time, move the switch to OFF to subtract an hour (-1 hr.).
High/Low Dimmer control - Modify the display brightness to your preference with the high or low dimmer control.
Back up Battery - The CR2032 button cell battery is pre-installed and is used for the back up battery and the time settings. It is in a secured cabinet at the bottom of the clock. This battery will last for many years.
Time Zone Selection - The default time zone is Eastern Standard Time. Before plugging in, set your time zone on the bottom of the clock.