What start and end times to enter if this does not work

Pictures look good and also the workmanship is good.
But it is as I said a pure manual image viewing tool. One can the device when it is plugged in and neither exclude nor can automatically start the slideshow. Although you can enter a start and end time in the system. But unfortunately it has no effect.
Unfortunately no instructions was there, so I do not know if that indicates this is much lighter but can? But when I read the other reviews so this is not the case. Too Bad !!!