yaakov doe -“We use the Shabbos clocks to turn the units on a few times daily on Shabbos. The built ins don’t allow more than one cycle.”
I did a net search, which you can too. There are models that are 7 day programable which allow 4 on/off cycles per day. There are also many models which have the auto restart. Just be aware the more features a unit has -the more it costs.