Altitude Pressure Sensor with EFM Processor and Dual RS232 Interfaces

  • 1895

We currently have 3 in stock.


This module contains an MPL311A5 Altitude Pressure Sensor. It measures barometric pressure and outputs the pressure in Pascals. It also has an altitude mode and will output altitude with a 1 foot (30 centimeters) resolution. It also measures temperature very accurately.

The module also contains an EFM32ZG108 Gecko low power microcontroller and two RS232 serial ports allowing it to be daisy chained in a network. Pre-Programmed for use in an openHAB Home Automation system or can be Re-Programmed for other uses.


  • Freescale MPL3115A2 MEMS Pressure Sensor
    • Pressure: 20-bit measurement (Pascals)
    • Altitude: 20-bit measurement (Meters)
    • Temperature 20-bit measurement (degrees Celcius)
    • Programmable events
    • Autonomous Data Acquisition
    • Resolution down to 1 foot/30 centimeters
    • 32 sample FIFO
    • Sample rate of 1 second up to 9 hours
    • Can log data in FIFO for days
    • Low power operation
    • Programmable accuracy
  • +3.6V to +6V Input Voltage
  • Power management designed for very low standby power
  • Small Size: PCB is 20mm x 20mm (0.79" x 0.79")
  • EFM32ZG108 Gecko Microcontroller
    • ARM Cortex-M0+
    • Low Power Operation
    • 32KB Flash Memory
    • 4KB RAM
  • MAX3232 Dual RS232 Line Driver/Receiver
  • Two 4 Pin DF11 Right Angle Male Connectors each with Power and RS232
  • 6 Pin DF11 Right Angle Male Connector for Programming and Debug
  • Pre-Programmed with openHAB Item Firmware for Plug-and-Play
  • Pre-Programmed Firmware is Designed for Low Power Operation
  • May be Programmed with the Arduino IDE


  •  Weather Station
  • High Accuracy Altimetry
  • Personal Electronics

Eagle Files
MPL3115A2 Data Sheet


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