This is a 3.3/5V compatible MEMS gas concentration sensor from DFRobot. This sensor supports the detection of various gas concentrations such as CO, C2H5OH (Alcohol), H2, NO2, NH3, and integrates various gas concentration conversion formulas in the code to facilitate the testing and use of sensors.

With I2C output and 3.3~5.5V wide voltage input, it is compatible with Arduino, ESP32, Raspberry Pi and other mainstream controllers.

Features

• Supports detection of a variety of harmful gasses
• Integrates the calculation formulas of various gas concentration
• Low power consumption
• I2C digital output
• Compatible with the 3.3~5.5V master controller

Specification

• Detection of Physical Quantities: gas concentration of CO，C2H5OH(Alcohol), H2, NO2, NH3, CH4
• Operating Voltage: 3.3～5.5V DC
• Power Dissipation: 0.45W(5V)
• Output Signal: I2C (0~3V)
• Measuring Range:
  • 1 – 1000ppm (Carbon monoxide CO)
  • 0.05 – 10ppm (Nitrogen dioxide NO2)
  • 10 – 500ppm (Ethanol C2H5OH)
  • 1 – 1000ppm (Hydrogen H2)
  • 1 – 500ppm (Ammonia NH3)
  • >1000ppm (Methane CH4)
• Working Temperature: -30～85℃
• Working Humidity: 5～95% RH(No condensation)
• Storage Temperature: -40~85℃
• Lifespan: >2 years (in the air)
• Circuit Board Size: 27mm* 37mm
• Mounting Hole Size: inner diameter 3.1mm/ outer diameter 6mm

Package Contents

• 1x Gravity: MEMS CO, Alcohol, NO2 & NH3 Gas Sensor
• 1x Gravity 4-pin I2C Cable

Resources

• Product Wiki
• MiCS-4514 Datasheet
• Schematics Diagram
• Dimension and Component Layout