This is a fairy simple thermostat but it has a lot of options. I bought one a few months ago and liked it so much I bought the same one when I decided to upgrade the second thermostat in my house. I know others have rated it low but it is working well for me. You can select either a weekday and weekend programming, or program 7 days. You can also select 4 programming times or 2 programming times. If the user guide that comes with it is not complete enough go to the manufacturers website for more information.
This thermostat is easy to use and very reliable.
The programming is a little difficult to remember, so save the instructions or download them to your favorite device.