This waterproof temperature sensor kit uses DS18B20 probe AS . It contains a probe with a resistor module. So it is easy to connect on the Arduino board. 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. If you want to make a simple water purifier, we recommend buying together with Gravity: Analog TDS Sensor/Meter for Arduino 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") long * Cable diameter: 4mm(0.16") * Length: 90cm(35.43") Documents * Wiki Doc Shipping List * Waterproof DS18B20 Digital temperature sensor (DFR0198) x1 * Terminal sensor adapter (DFR0055) x1 * Digital sensor cable (FIT0011) https://elecena.pl/product/22714784/gravity-waterproof-ds18b20-sensor-kit-discontinued 2023-03-06 https://elecena.pl/product/22714784/gravity-waterproof-ds18b20-sensor-kit-discontinued 2024-09-19