Drayton Lifestyle LP722 7 day Electronic Timeswitch. Suitable for fully pumped pr gravity hot water systems. Features Memory Saver - programme and clock never need resetting in the event of loss of power, Pre-set clock, Permits different programmes for heating and hot water and allows different programmes for weekdays and weekends, 3 on and off settings available, Built-in standard programme, Part L Compliant (Part J in Scotland, Automatic Summer/Winter Time Change and Backlit Screen.