@revk I used them (DS18B20 probes) for measuring the temperature of my garden fish pond. The pond is 6 feet deep, and the bottom sensor is pretty much on the bottom. No extra waterproofing or other such countermeasures; 5 years later I took this screenshot this morning.

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@revk If they're the cheapo ones with the adhesive heatshrink, fairly good. I've not had one fail with moisture yet

@revk I've got a couple in my fish tanks. Couple of years old, never had any issues.

@revk@toot.me.uk Ark B? "One's never alone with a rubber duck."