We use a kegerator so the probes just run through the pre-drilled hole for the gas. But really the cables are so thin a standard door seal would close over them

I can see where a temp would be useful to detect failure , but a power draw monitor would do the same

@southernbrewer I‘m not a Home brewer but three of our fridges get the same treatment as their primitive „thermostats„ are so crappy. Two simply were either too cold or not cold enough with a ridiculous amount of variation while the third one, an outdoor fridge-freezer combo has the thermostat in the fridge compartment and during cool nights sees no need to cool while the freezer compartment gets close to thawing.