The CentaurPlus C21 is a two channel 24 hour programmer allowing independent time control of central heating and hot water. This range now features an upgraded backlit display screen and incorporating an automatic GMT/BST clock.
- Industry standard six pin backplate
- Up to 3 on/off's per day
- Hot water boost and central heating advance
- Mains powered with battery back up
- Simple to plug in and replace
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