DS18B20 Temperature Sensor Module

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  • Working Voltage: 3V~5.5V
  • Detected Temperature Range: -55°C~ 125°C (-67°F~ 257°F) deviation ±2°C ,-10°C~ 85°C deviation ±0.5°C
  • Panel Size: 21mm x 10mm
  • DQ : data input/ output pin
  • GND: ground


  • DS18B20 digital temperature sensor works on a single bus and it has 64-bit ROM to store the serial number of component. It can get quite a few DS18B20 sensors connected to a single bus in parallel. With a microcontroller, you can control so many DS18B20 sensors that are distributed around a wide range.
  • The sensor is widely used in these fields, including HVAC environmental control, temperature detection of building, instrument and machine, and process monitoring and control.
  • The number of sensors in the parallel connection cannot be over 8; otherwise, brownout will happen and the signal transmission will turn to be unstable. As a result, multi-point temperature measurement will fail.