On 15/08/2013 13:15, Muddymike wrote:
How does this work then?
http://www.lidl.co.uk/cps/rde/SID-6F...Detail&id=4816
Mike
Neodymium magnet on an impeller in the water flow and a coil around it to
generate the voltage. Temperature sensor to choose LED colour.
Amazing that they can make it so cheaply.
I expect it lasts for guarantee period plus one day.
Just realise I sent that to URG not uk-diy :-)
Mike