shop/ adafruit/ adafruit mpl3115a2 barometric pressure altitude temperature

Measure Temperature with a Sensor Made for Embedded Builds

The Altimeter Barometric Pressure Altitude Temperature MPL3115A2 I2C Sensor is an environmental sensor with i2c designed for temperature logging, thermal control, and equipment monitoring. It is a practical fit for makers, students, and engineers who want reliable sensor data in embedded builds.

Key details include Pressure sensing range: 50-110 kPa (up to 10Km altitude); Interface: I2C.

Why you’ll love it

  • Useful spec: 3 to 5V compliant
  • Sensing range: 50-110 kPa (up to 10Km altitude)
  • Compact size: 18mm x 19mm x 2mm / .7" x .8" x .1"
  • Easy wiring: I2C
  • Maker-friendly build: Easy to use in prototypes, classroom projects, and custom electronics
  • Common controller support: Works well with Arduino, ESP32, Raspberry Pi, and similar boards

Compare with similar products

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Barometric Pressure & Altitude Sensor BMP280 I2C or SPI environmental sensor with I2C I2C interface, SPI interface

What you can build

This sensor is a good fit for thermostats, incubators, battery monitors, weather nodes, and thermal data loggers.

Starter bundles

Pair it with an Arduino-compatible board, ESP32, or Raspberry Pi, plus an I2C cable or jumper wires for quick setup and testing.

Recommended add-ons

Useful add-ons include tubing, adapters, and a display or logger, depending on how you plan to power, mount, and log the sensor.

Technical specifications

Product Altimeter Barometric Pressure Altitude Temperature MPL3115A2 I2C Sensor
Logic 3 to 5V compliant
Pressure sensing range 50-110 kPa (up to 10Km altitude)
Dimensions 18mm x 19mm x 2mm / .7" x .8" x .1"
Vin 3 to 5.5 VDC
Weight 1.2g
Interface I2C
Category pressure sensors

Wiring & usage notes

Connect VCC, GND, SDA, and SCL to your controller. Use the correct board voltage and I2C address in your code.

What’s in the box

1 × Altimeter Barometric Pressure Altitude Temperature MPL3115A2 I2C Sensor

Frequently Asked Questions

What does the Altimeter Barometric Pressure Altitude Temperature MPL3115A2 I2C Sensor measure? It is designed to measure temperature or heat.
Can I use it with Arduino, ESP32, or Raspberry Pi? Yes. It is well suited for common maker and embedded platforms, as long as you power it at the correct voltage and match the signal level to your controller.
How do I connect this I2C sensor? This version uses I2C, so you usually connect VCC, GND, SDA, and SCL.
What affects accuracy? Power quality, wiring, mounting, target material, and the real environment can all affect the reading. It is best to test and calibrate in the final setup.
Is it good for prototyping? Yes. It is a practical choice for learning, proof-of-concept builds, and small automation projects.

Compatibility & downloads

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Build with this board

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Notes from the bench

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Ask the community

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