Senseur température DS12B20 + Extra
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DS18B20 temperature sensor KIT + Extra

DS18B20 temperature sensor, digital 1-wire (-55 to 125°C)

€4.94 (tax incl.) €4.08 (tax excl.)
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Read temperature with reliability with the OneWire DS18B20 digital temperature sensor

This digital temperature sensor offers excellent accuracy (±0.5°C over most of the temperature range). It uses the 1-wire protocol (supported on Arduino and Raspberry Pi) and communicates readings with a precision of up to 12 bits from the embedded analog-to-digital converter. It works really well with all microcontrollers using a single digital pin. You can even connect multiple sensors to a single pin because each sensor has a unique 64bits ID "engraved" at the factory. This makes it easy to differentiate them.  

Usable with 3.0 and 5.0V systems.

The only bad thing is that it uses the Dallas 1-wire protocol, which is really complex, and requires a lot of code to handle the communication. There is a super 1-wire library for Arduino, but some microcontroller does not have a library that supports this protocol, so be sure to check!

The sensor comes with a 4.7K resistor, used as a pullup resistor between the DATA pin and VCC (absolutely necessary).

This sensor also exists in waterproof version

Technical specifications

  • Can be used over a wide temperature rate: -55 to 125°C
  • Resolution: 9 to 12 bits (selectable)
  • Interface: 1-Wire - Only one digital pin needed for communication.
  • Unique ID 64 bit ID (assigned to the sensor during manufacture).
  • Several sensors can share the same digital pin.
  • Accuracy: ±0.5°C from -10°C to +85°C
  • Alarm system when the limit temperature is reached.
  • Response time: less than 750ms per sensor interrogation
  • Usable from 3.0V to 5.5V for power and data


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