This  DS18B20 1-WIRE Digital Thermometer with 9 to 12 bit programmable resolution.

• Unique 1-Wire interface only requires ONE data pin for communication
• Each device has a unique 64-bit serial number stored in an on-board ROM
• Can be powered from the data line with a power supply range of 3.0V to 5.5V in Parasite mode
• Measures temperatures from -55°C to +125°C
• ±0.5°C accuracy from -10°C to +85°C
• Thermometer resolution is user-selectable from 9 to 12 bits
• Converts temperature to 12-bit digital word in 750ms (max)

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  Demo Python program

  Minimum Requirements – a Raspberry Pi with Raspbian (wheezy) installed ,  

  18b20-1.py   18b20.py       User Manual

                      

  Package Content   1x Rs-Pi 18B20 1-Wire Temp Sensor 3x 20cm male to male cable   1x manual