Unfortunately, I can't set the time and find it complicated, so I put it in a drawer and bought another brand.
This time switch is designed as a monitoring device with brightness and random generator. Often switches on and off irregularly. For a pure time switch, the twilight sensor (photocell) must be pasted over in black and the random generator switched off. Extended instructions for use are available from Steffen.
Simple operation, but malfunctioned after a short time. Therefore returned.
I bought the same timer a few years ago and needed another one. It is very easy to program and fully meets the requirements. I use it outdoors.