On 05/02/2021 11:49, Harry Bloomfield wrote:
on 04/02/2021, David supposed :
As for the thermostat* don't think that it is feasible to run the cable
under the lid as the seal is a thin raised plastic strip in the base
which
fits into a recessed rubber seal in the lid. A bit like the seal on some
plastic food storage tubs.

I don't really see any controller being able to work very well, without
being able to 'see' the temperature inside.

From the original post, it was the *external* temperature that was
being monitored. Probably only turning the coolbox on when the weather
was warm enough to bother.

I assume that the idea is not to have chilled beer, but to prevent it
being overly warm on hot days.

Might it be possible to add proper thermostatic control to the coolbox
though? Presumably a small hole in the lid (usually only plastic and
insulation) would let a thermocouple or RTD be fitted and a simple
on/off temperature controller fed by that.