Our new boiler was fitted with a timer which was so small it was very difficult to adjust and difficult to see, after a lot of studying different makes and models I bought this and I am very pleased with my choice. Our old room stat was a Honeywell but was only a basic model, the wiring was in place and the screw holes even lined up with the new one so it took only 15 minutes or so to install.
I read the instructions carefully and soon had it set up the way we wanted our heating to work, it's very easy to override the temperature if we need a bit more (or less) heat and it reverts back to the original setting when it enters the next time period (it has six time periods which you can adjust time & temperature to your own requirements, mounted at the right height it's easy to see and I cannot fault it in any way.










