Sensors 3 pins

DS18B20

1-Wire digital thermometer. +/-0.5C accuracy, waterproof versions available.

// connector diagram 3 pins

// loading diagram...

// Specifications

Supply Voltage

3V – 5.5V (or parasitic)

Temp Range

-55°C – +125°C

Accuracy

±0.5°C (-10 to +85°C)

Interface

1-Wire

Resolution

9–12 bit selectable

Package

TO-92 / Waterproof

// Pin Reference Table

Pin	Name	Function	Type
1	GND	Ground	GND
2	DQ	1-Wire data, 4.7k pull-up to VDD	BUS
3	VDD	Power supply 3V–5.5V	PWR

The DS18B20 is a 1-Wire digital thermometer with ±0.5°C accuracy over -10°C to +85°C. It requires only one data wire (plus ground), and multiple sensors can share the same wire, each with a unique 64-bit ID.