Features large, easy-to-read screen and uses clear icons and intuitive setup menus. Ideal for almost all domestic heating control applications. 4 comfort buttons allow for temporary change of the programmed schedule at short notice. Familiar wiring ensures installation is easy, quick and accurate. Includes boiler service timer. 5-35°C Temperature Range Suitable for All Boilers 3, 4 or 5-Wire Installation Mains-Powered Backlit LCD Display 7 Day, 5/2 Day or 24 Hour Programmable 2 Pre-Set Programmes 3 On / Off Periods per Day Boost Facility 5-35°C Temperature Range Suitable for All Boilers 3, 4 or 5-Wire Installation Mains-Powered Backlit LCD Display 7 Day, 5/2 Day or 24 Hour Programmable 2 Pre-Set Programmes 3 On / Off Periods per Day Boost Facility