This is a 3.3/5V compatible MEMS gas concentration sensor from DFRobot. 

 This sensor supports the detection of various gas concentrations like 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

Support detection of a variety of harmful gas

Integrate the calculation formulas of various gas concentration

Low power consumption

I2C digital output

Compatible with the 3.3~5.5V master controller

Applications

Gas leak detection

Gas safety equipment

Air environment detection

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°C

Working Humidity: 5~95% RH(No condensation)

Storage Temperature: -40~85°C

Lifespan: >2 years (in the air)

Circuit Board Size: 27mm* 37mm

Mounting Hole Size: inner diameter 3.1mm/ outer diameter 6mm

Documents

Shipping List

Gravity: MEMS CO, Alcohol, NO2 & NH3 Gas Sensor x1

Gravity-4pin I2C Cable x1