You can program the frame to turn on/off at a certain time of the day using military time and after you have set up the date time settings. Then there is a separate feature that turns the frame on based on motion. You just simply turn motion on for that to work.
I don't know about the on/off. I suppose it turns it on and off. This one does not have the motion sensor. I read where that is a bit of a pain, since it starts the pics over at the same place at each restart. But, even there, the random selection scrmables the pics everytime it seems from the second pic. Mine is set to turn off every night at 11:40 PM and restart at about 7:00 AM, and this function works.
This is not the motion sensor model, but they do have a 12" unit with motion sensing. That one is called the "Nix Pro Series 12" Digital Photo Frame"This one can simply be programmed to turn on and off at specified times. I set mine to turn on at 7 AM and off at 11PM.