Extractor fan timer wiring

[John D v2.0]

shop owner told me it would work on anything

Is it not down to the buyer to know he wants a 12V one?

Yes, until the shop owner provides advice before the purchase is concluded. The buyer is entitled to rely on that advice however wrong it turns out to be

 

[JohnW2]

Yes, until the shop owner provides advice before the purchase is concluded. The buyer is entitled to rely on that advice however wrong it turns out to be

Particularly if it is still in 'saleable' condition (with packaging etc.), it could well be that, if he is 'decent', the shop owner would provide a refund without any argument.

Kind Regards, John