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One Wire Digital Temperature Sensor - DS18B20
 One Wire Digital Temperature Sensor - DS18B20One Wire Digital Temperature Sensor - DS18B20 

One Wire Digital Temperature Sensor - DS18B20

  (2 Reviews)
Our Price:  £4.87 

Available Now:  

1 in stock, immediate despatch

SKU:  PPSEN-00245
Part Number:  SEN-00245
Brand:  SparkFun

This is the latest DS18B20 1-Wire digital temperature sensor from Maxim IC. Reports degrees C with 9 to 12-bit precision, -55C to 125C (+/-0.5C). 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 corner stone of many data-logging and temperature control projects.


  • 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
  • Can be powered from data line. Power supply range is 3.0V to 5.5V
  • Measures temperatures from -55°C to +125°C (-67°F to +257°F)
  • ±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.)
  • User-definable nonvolatile (NV) alarm settings
  • Alarm search command identifies and addresses devices whose temperature is outside of programmed limits (temperature alarm condition)
  • Applications include thermostatic controls, industrial systems, consumer products, thermometers, or any thermally sensitive system



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Customer Reviews
Average Rating (2 Reviews):  
Write a Review and share your opinions!

Good product
Friday, 25 July 2014  |  Robert

Very simple to use and apparently reliable...also very cheap. A little small / fiddly. Doesn't need an A2D straight away with a Pi.


2 of 2 people found this review helpful.

Bulletproof temp sensor
Tuesday, 21 January 2014  |  Adam

These are great little sensors. They are easy to connect up, read and manage. They work over a wide range of temperatures and they are accurate and easy to callibrate.


2 of 2 people found this review helpful.