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Secure (Horstmann) SIR021 30-120 Minute Electric Water Heater Boost Timer (Replaces Electrisaver) - Ray Grahams DIY Store
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Horstmann Electrisaver Water Heating Boost Control | Remembers to switch of when you forget | Money saving products for off-peak electricity
KNOW YOUR PROGRAMMER BATTERY RESERVE SERVICE AND REPAIR WATER HEATER CONTROLLER FOR ECONOMY 7 AND WHITE METER TARIFFS INDICATORS
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Horstmann ELECTRISAVER E15 Push Button Electronic Run-Back Timer With 15-60 Minute Boost Control Suitable For Immersion Heaters - Fits 1 Gang Box 3kW - Internet Electrical
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