DS18B20 Temperature Sensor Module is a digital temperature sensor, and you can easily connect it to Arduino with only one 4.7-pound resistor, base 1 – Ground 2 – Output – Base 3 to the positive of the source, with resistance to base 2 Is connected. The connection of this sensor to the Arduino via the 1-wire protocol is established. Therefore, several sensors can be connected only through one common wire to Arduino. The output is digitally accurate to 12 bits. Therefore, the temperature can be measured with a precision of 0.0625 º C.