DFRobot Gravity: MEMS Gas Sensor (CO, Alcohol, NO2 & NH3) – I2C – MiCS-4514


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Approx Restocking Date: NA
SKU: 1141622
  1. Operating Voltage: 3.3~5.5V DC
  2. Power Dissipation: 0.45W(5V)
  3. Output Signal: I2C (0~3V)
  4. Working Temperature: -30~85℃
  5. Working Humidity: 5~95% RH(No condensation)
  6. Storage Temperature: -40~85℃
  7. Lifespan: >2 years (in the air)
  8. Circuit Board Size: 27mm* 37mm
  9. Mounting Hole Size: inner diameter 3.1mm/ outer diameter 6mm


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Brand: DF Robot
Category: Gas and Dust Sensor
Tags: Gas Sensor, Carbon Monoxide Sensor

This is DFRobot Gravity: MEMS Gas Sensor (CO, Alcohol, NO2 & NH3) – I2C – MiCS-4514.

DFrobot offers an advanced level of sensors at an affordable cost than any other competitor brand in the market, making them ideal for the one who wants to start some Projects through Different types of sensors.

After finding Different types of sensors on market, we at robu. in have determined that DFrobot is one of the good brands that offer a wide range of sensors at an Appropriate price.

DFRobot offers a 3.3/5V compatible MEMS gas concentration sensor. This sensor can detect a variety of gas concentrations, including CO, C2H5OH (alcohol), H2, NO2, and NH3, and the code includes various gas concentration conversion formulas to make sensor testing and use easier. It’s compatible with Arduino, ESP32, Raspberry Pi, and other mainstream controllers thanks to its I2C output and 3.35.5V wide voltage input.

Board Overview:

Df Robot Boardd Overview

Connection Diagram:
Df Robot Sku1141622

  1. Gas leak detection
  2. Gas safety equipment
  3. Air environment detection


  1. Support detection of a variety of harmful gas
  2. Integrate the calculation formulas of various gas concentration
  3. Low power consumption
  4. I2C digital output
  5. Compatible with the 3.3~5.5V master controller

Useful Links:

Please visit the DFrobot wiki page for more information about this product. Any suggestions for improvement, such as correcting errors, adding more demo codes or tutorials, will be highly appreciated.

Package Includes:

1 x Gravity: MEMS CO Alcohol NO2 & NH3 Gas Sensor

1 x Gravity-4pin I2C Cable

SKU: 1141622 Category: Tags: ,
Operating Voltage(V)


Power Consumption (Watt)


Communication Interface


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)

Operating Temperature (°C):


Opt. Relative Humidity(RH)


Mounting Holes Diameter (mm)

ID:3.1, OD:6

Dimensions in mm (LxWxH)


Weight (g):


Shipping Weight 0.02 kg
Shipping Dimensions 6 × 5.5 × 2.5 cm
1 Month Warranty

This item is covered with a standard warranty of 1 month from the time of delivery against manufacturing defects only. This warranty is given for the benefit of Robu customers from any kind of manufacturing defects.  Reimbursement or replacement will be done against manufacturing defects.

What voids warranty:

If the product is subject to misuse, tampering, static discharge, accident, water or fire damage, use of chemicals & soldered or altered in any way.

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Country Of Origin: China