It is very easy to use and effective. schedules are programmed by 15mn slices.
Very practical, it has a button on the side to put it in or not timer mode, which allows use of the lamp or the machine without programming but without disconnecting the programmer.
I have put only 3 stars because:
- You have to have good eyes and especially a small instrument to trigger the programming modules that are really very small.
- The days the clock tends to become misaligned. So after 8 or 10 days the clock is off by several hours and therefore the planning for 21H, for example, starts at 15H ...
But at that price and with so many features you can not have everything!
It remains the best value I've found. Besides I took two.