Description DS18b20 Temperature Sensors are digital, hence, you don’t get any signal degradation even over long distances! Furthermore, these 1-wire digital temperature sensors are fairly precise (±0.5°C over much of the range) and can give up to 12 bits of precision from the onboard digital-to-analog converter. Also, they work great with any microcontroller using a single digital pin, and you can even connect multiple ones to the same pin, each one has a unique 64-bit ID burned in at the factory to differentiate them. Usable with 3.0-5.0V systems. DS18b20 Temperature Sensor Features Probe DS18B20 temperature sensor chip Stainless steel pipe anti- rust waterproof package Stainless steel housing (6 * 50mm), lead length around 100cm 3.0V ~ 5.5V power supply 9 to 12 adjustable resolution Temperature range -55 ° ~ +125 ° Unique single bus interface Output leads : Red (VCC), Yellow (DATA), Black (GND)