Horstmann C27 central heating programmer.
- Up to 3 on/off periods per day.
- Settings for each day of the week.
- 6 pin Backplate included.
- Program options auto / all day / on 24 hrs / off.
- Hot water boost and central heating advance facility.
- 3 Amp rated.
- Easy plug in replacement of programmers that use a "standard" six terminal wall plate.
- Two channels - typically one for radiators and the other for hot water.