Product Description Horstmann's best selling, big value 425 Series programmers are the simplest way to control water and central heating in the home. Simple to use with easily understood settings adjusted in seconds Easy to install, uses a 9 way standard backplate Diadem / Tiara 6Amp rated, Coronet 13 Amp rated Advance control to allow manual override switching ON or OFF Box Contains 1 x Programmer1 x Instructions
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