On 16/08/2013 15:19, Phil Cook wrote:
On 16/08/2013 09:34, Stephen Wolstenholme wrote:
On Thu, 15 Aug 2013 13:15:34 +0100, "Muddymike"
wrote:

How does this work then?

http://www.lidl.co.uk/cps/rde/SID-6F...Detail&id=4816


What pointless rubbish.

You could use it to determine when the shower was running at the right
temperature, sometimes just waving a hand in it can give a false idea of
the temperature. Of course it depends on how well graduated the colour
changes are.
So depending on temp it's Blue, Green and led.

I wonder what it would be like in the end of a hose for plant watering?