The Drayton LP241 has a 24-hour programme option which allows the user to customise daily 'on' and off periods depending on their lifestyle patterns. 
 
The advance boost button may be used to provide 1, 2 or 3 hours of heating and hot water in advance of the time periods they select. This prevents the user from having to reprogram if they suddenly need a one-time burst of heating or hot water. Up to three heating and hot water periods can be preset.
 
EN60730-1 and EN60730-2-7 applied standards
Part L compliant
CE approved
Suitable for fully pumped or gravity hot water systems
Comes with a backlit screen
Holiday mode
Separate heating and hot water timing
Automatic summer and winter time change
Mounts on universal backplate
24 Hour control with 3 time periods per day