A highly sensitive barometric pressure sensor for weather, industrial, rocketry, balloon, and many other pressure sensing applications.

The sensor is designed for use as a micro-altimeter so it has incredible resolution: so sensitive it can detect an altitude change of just 13cm! Move it up and down and you'll see the output values change.


  • Pressure and temperature sensor combined
  • I2C interface for easy Arduino connection
  • Arduino driver library for simple integration into your projects
  • 2.3V to 6V operation using built-in level shifters and voltage regulator
  • Onboard I2C pull-ups with optional isolation
  • Maximum pressure sensor range: 10 to 2000 mbar (0.145 to 29 psi)
  • Pressure sensor error band at 25C, within 300 to 1200mbar: +/-2mbar
  • Pressure sensor resolution: 0.11 / 0.062 / 0.039 / 0.028 / 0.021 / 0.016 mbar
  • Pressure sensor response time: 0.5 / 1.1 / 2.1 / 4.1 / 8.22 / 16.44 ms
  • Pressure sensor stability: +/-1mbar / year
  • Temperature sensor range: -40 to +85C
  • Temperature sensor resolution: <0.01C
  • Temperature sensor accuracy at 25C: +/-1C



Brand Freetronics

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