Just found Solar Panel Immersion Heater Switch - Use Surplus Power To Heat Water | eBay
Has anyone tried one of these?
Do not know if there is any garantee with it but have asked the question.
To be cost effective it has got to last several years
Has anyone tried one of these?
Do not know if there is any garantee with it but have asked the question.
To be cost effective it has got to last several years
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