No, the K-Duo Essentials does not have a timer function you can set to turn the coffee maker on and off at predetermined times.
However, the Keurig Duo Essentials coffee maker does have an Auto-Off feature, which turns the coffee maker off one minute after brewing the last single-serve coffee cup.
The heating plate for the 12 cup carafe also shuts off automatically after two hours of brewing.
These features make the Keurig K-Duo Essentials energy efficient.