Miniature-Sensor Module for CO₂, Temperature and Barometric Pressure

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  • CO₂
  • Temperature
  • Pressure


The EE895 3-in-1 sensor module is an ideal choice for measuring devices for demand controlled ventilation, building automation or for process control. Due to the low power consumption, the module is also suitable for battery-operated devices such as hand-held meters, data loggers or wireless transmitters.

  • EE895 CO₂, temperature and ambient pressure module

  • EE895 Evaluation Board with sensor module

    A Single Module - 3 Measurands
    The EE895 module measures not only the CO₂ concentration up to 10,000 ppm (1% CO₂) but also the temperature (T) and ambient pressure (p). The pressure and temperature compensation with on-board sensors minimizes the impact of the environment onto the CO₂ measurement. As a result, the EE895 offers a particularly high CO₂ measurement accuracy, independent of altitude or changing ambient conditions.

    Long-Term Stable CO₂ Measuring Principle
    The dual wavelength NDIR CO₂ measuring principle with auto-calibration ensures excellent long-term stability, as it automatically compensates for aging effects and is particularly resistant to contamination. The multi-point CO₂ and temperature factory adjustment procedure leads to excellent CO₂ measurement accuracy over the entire T working range from -40...60 °C (-40...140 °F).

    Easy Design-In
    The I²C and UART interfaces, the very small dimensions of only 35 mm x 15 mm x 7 mm (1.38" x 0.6" x 0.27") and various mounting options facilitate the design-in of the sensor module.

    Flexibly Configurable
    The EE895 module can be configured via the digital interface. The CO₂ measurement interval can be set according to the application and the power requirements.

    EE895 Evaluation Board for Test Purposes
    The evaluation board, which is available as an accessory, allows easy testing of the EE895 with a view to the intended application. It is connected to the PC via a USB cable. Using the sensor evaluation software, which is available free of charge, the measurement data can be visualised and logged. Users have the option to set the EE895's measurement interval, and the desired measurement units for temperature and pressure.

    Design Data and Support Literature
    The electronic design data of the EE895 is available free of charge from the download area of the E+E website. This means that the 3D data from the sensing module can be quickly and easily transferred to a CAD design tool. Using the I²C interface, the EE895 module can be connected to various single board computers such as the Arduino or Raspberry Pi. Step-by-step instructions (available from the download area) help you program and integrate the EE895 into your application.

    Typical Applications

    • Demand controlled ventilation
    • Building automation
    • Process control
    • Data loggers, hand-held instruments
    • Wireless transmitters

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    Key Features

    • Dual wavelength NDIR with autocalibration
    • T and p compensation of the CO₂ measurement
    • Very low power consumption and peak current
    • I²C or UART interface

    Technical data

    Measuring range CO₂
    0...2000 ppm
    0...5000 ppm
    0...10000 ppm
    Accuracy CO₂ at 25 °C (77 °F) and 1013 mbar (14.69 psi)
    ±(50 ppm +2% of mv)
    ±(50 ppm +3% of mv)
    ±(100 ppm +5% of mv)
    Measuring range Pressure
    700…1100 mbar (10.15...15.95 psi)
    Accuracy Pressure at 25 °C (77 °C)
    typ. ± 2 mbar
    Measuring range Temperature
    -40…60 °C (-40...140 °F)
    Accuracy Temperature at 25 °C (77 °F)
    typ. ± 0.5 °C (± 0.9 °F)
    Digital interface
    I²C or UART
    3.3 - 5V DC

    Calibrating your limits

    Your products and services can only be as precise as the tools you use to measure them. With more than 20 years of experience, the calibration team of E+E Elektronik focuses on providing a reliable service without any unnecessary delays or bias.

    Discover the value of working with an expert in calibration that prioritizes

    • accuracy,
    • fastness and
    • reliability

    Learn more

    Downloads EE895

    Electronic Design Data
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