Specification -Operating voltage: 3.0~ 5.5V -±0.5°C Accuracy from -10°C to +85°C -Usable temperature range: -55 to 125°C (-67°F to +257°F) -9 to 12 bit selectable resolution -Uses 1-Wire interface- requires only one digital pin for communication -Unique 64 bit ID burned into chip -Multiple sensors can share one pin -Temperature-limit alarm system -Query time is less than 750ms -3 wires interface : Type A -Red wire - VCC -Black wire - GND -Yellow wire - DATA Type B -Red wire - VCC -Yellow wire - GND -Green wire - DATA -Stainless steel tube 6mm diameter by 35mm(1.34 #34;) long -Cable diameter: 4mm(0.16 #34;) -Length: 90cm(35.43 #34;) Wiki : https://dfrobot.com/wiki/index.php?title=Waterproof_DS18B20_Digital_Temperature_Sensor_(SKU:DFR0198) Datasheet DS18B20 : https://image.dfrobot.com/image/data/DFR0198/DS18B20.pdf