Thanks to the bad reviews thought long ....

.... Totally unnecessary! I recommend the full time switch.
Granted, the font size of description / instructions are very small. I have this but not even required. Of course, one must not expect everyone that you know your way with such things. For this case, a guide from the very advantage. While you should not be, but in need you can scan it and zoom in to the PC.
It has been criticized, the fiddly operation. Well, I'm pretty clumsy illness, but I had with the setting / operation no problems.
I think a general positive attitude towards the product is crucial.
My switch is connected to an external lighting. Works flawlessly !!! At dusk the light goes on, at 23:00 clock it comes from and at 05:00 clock, you go to get back later if there is enough light to go out.
I do not know what you expect from a sunning time switch, but my clock does exactly what it should do .... namely switch. And at the right time.