This is a waterproofed version of the DS18B20 temperature sensor. Handy for when you need to measure the temperature of wet conditions. While the sensor is good up to 125 degree, the cable is jacketed in PVC so we suggest keeping it under 100 degree. Since the DS18B20 operates in digital signals, you will not get any signal degradation even over long distances! The DS18B20 provides 9 to 12-bit (configurable) temperature readings over the 1 wire interface.