Review on Dmyond DS18B20 Temperature Waterproof Digital by Wayne Laguna

Connected three of them to ESP3266 for hot tub temp control. I tested all three in one place first and all their temperatures matched, and also with another thermometer I had tested with. Now placed in the bath, they are all lined up again with the other temperature sensors. the possibility of remote monitoring was very practical. For reference, I used ESPHome to program the ESP3266 and Home Assistant to display the sensor readings. Very simple construction.