This is Crowtail- One Wire Waterproof Temperature Sensor for Crowtail a waterproofed version of the DS18B20 Temperature sensor. Handy for when you need to measure something far away, or in wet conditions Applications where this feature is useful include H https://elecena.pl/product/7560018/crowtail-one-wire-waterproof-temperature-sensor-2-0 2017-02-01 https://elecena.pl/product/7560018/crowtail-one-wire-waterproof-temperature-sensor-2-0 2025-12-17