The intercom linked to my Samsung phone system starts giving false calls every winter.
I know that it must be a moisture/condensation related issue as it never happens in the summer.
I have a spare of wires going into the intercom box and I want to fit a small heat source to keep the electronics dry.
It never gets direct sunlight so over-heating should not be a problem.
Approx Dimensions Width:100mm Height: 140mm Depth: 70mm
Any suggestion on the heat source ?
Bulbs would be no good as they burn out .
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