On Ebay are digital thermometers for under $2 with free shipping. How do they do that? I ordered one and The Canada Post lady delivered it to the door.
Anyway, it is perfect for older 3way fridges. There is a hole on the back of the fridge
where the copper temperature control lines go into the fridge
It is easy to pop the sensor through that hole ( re seal it with some calking), and voila you have a constant readout of fridge
temperature. The module has an internal battery
(two LR44 button cells included), and those cells last years.
" Is the beer cold?........Yes, it is 4.2C!".
I figure the pay down period for this mod is about 10 minutes.
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