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Introduction: This waterproof temperature sensor kit is using the same probea??a??DS18B20 probe AS . It contains a probe with a resister module. So it is easy to connect on the board for Arduino.? The DS18B20 temperature sensor provides 9 to 12-bit (configurable) temperature readings over a 1-Wire interface, so that only one wire (and ground) needs to be connected from a central microprocessor. Compatible with 3.0-5.5V systems.? Specification: Operating voltage: 3.0~ 5.5V ±0.5?ᆪC Accuracy from -10?ᆪC to +85?ᆪC Usable temperature range: -55 to 125?ᆪC (-67?ᆪF to +257?ᆪF) 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 (Recently there`s a series of sensors using this pin mapping. Sorry for the inconvenience.) Red wire - VCC Yellow wire - GND Green wire - DATA Stainless steel tube 6mm diameter by 35mm long Cable diameter: 4mm Length: 90cm ? Package includes: 1 x Waterproof DS18B20 Digital temperature sensor? 1 x Terminal sensor adapter?? 1 x Digital sensor cable??