Offers flexible time settings, ensuring heating is only called for during normal routine. Features large, easy to read backlit display with intuitive layout, simple channel override, display for day, time and on/off period and icons showing status of output channels. Offers Auto, +1hr Boost or Constant On/Off control for both channels. 4, 5 or 6-Wire Installation Fits Standard UK Backplate 7 Day, 5/2 Day or 24 Hour Programmable 1 Pre-Set Programme 1, 2 or 3 On / Off Periods per Day Boost Facility Holiday Mode Backlit LCD Display 4, 5 or 6-Wire Installation Fits Standard UK Backplate 7 Day, 5/2 Day or 24 Hour Programmable 1 Pre-Set Programme 1, 2 or 3 On / Off Periods per Day Boost Facility Holiday Mode Backlit LCD Display