DS18B20 – One-Wire Digital Temperature Sensor

(7 customer reviews)


SKU: STH1035 Category: Tags: , ,


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
  • For more information on the DS18B20 check out Maxim-IC


Additional information

Weight 0.003 kg

7 reviews for DS18B20 – One-Wire Digital Temperature Sensor

  1. Jacques

    This 1-wire thermometer is cheap and very easy to use with an arduino as all the 1-wire libraries are present. The precision is extremely good. The advantage of the 1-wire setting is that once the first one is placed, one can put several other ones on the same 3-wire cable (I use 2 wires for power and 1 wire for data).

  2. Bart (verified owner)

    Nice sensor for building cheap temperature loggers, see http://vaasa.hacklab.fi/2015/01/12/esp8266-ds18b20-thingspeak-nodemcu/

  3. Bessière (verified owner)

    Very easy to use with Dallas library to access memory and register alarm

  4. serfieledrag (verified owner)

    I’ve used it for logging temperature on my balcony and it work well and precise.

  5. thiagoas (verified owner)

    Very precise temperature sensor, works nice.

  6. steve.bromwich (verified owner)

    Cheap and accurate temperature sensor.

  7. marc06 (verified owner)

    Good precision , and more reliable then my DHT11.

Add a review

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Product Enquiry