DS18B20 Temperature Sensor Module is a Digital temperature sensor DS18B20 that will tell you temperature with 9 to 12-bit resolution! Uses only 1 wire to the Arduino or other micro-controller for communication. With the One Wire protocol, you can operate a large number of these sensors from one Arduino pin.

This is the latest DS18B20 1-Wire digital temperature sensor from Maxim IC. Reports °C with 9 to 12-bit precision, -55°C to 125°C (+/-0.5°C). Each sensor has a unique 64-Bit Serial number etched into it allows for a huge number of sensors to be used on one data bus.

This is a wonderful part that is the cornerstone of many data-logging and temperature control projects.

Features :

Unique 1-Wire interface requires only one port pin for communication
Each device has a unique 64-bit serial code stored in an onboard ROM
Multidrop capability simplifies distributed temperature sensing applications
Requires no external components
Thermometer resolution is user-selectable from 9 to 12 bits
Converts temperature to the 12-bit digital word in 750ms (max.)
User-definable nonvolatile (NV) alarm settings
Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition)
Board DS18B20 chip DS18B20 chip left 3P round hole seat is easily accessible at the same time
Chip pin all leads, built-in pull-up resistor
On-board power indicator

Specifications:

IC Chip	DS18B20
Supply Voltage (V)	3 to 5.5
Temperature Range(°C)	-55 to +125
Measuring Accuracy(°C)	±0.5
Resolution	9bits to 12bits (Selectable)
Length (mm)	21
Width (mm)	10
Weight (gm)	4