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

This is a 3.3/5V compatible MEMS gas concentration sensor from DFRobot. It's a versatile sensor that can detect various gas concentrations such as CO, C2H5OH (Alcohol), H2, NO2, NH3, and even CH4. The sensor comes with integrated gas concentration conversion formulas in its code, making it incredibly easy for you to test and use. With an I2C output and a wide voltage input range of 3.3 - 5.5V, it's compatible with popular controllers like Arduino, ESP32, and Raspberry Pi. Key features include the ability to detect multiple harmful gases, built - in calculation formulas for gas concentrations, low power consumption, I2C digital output, and compatibility with 3.3 - 5.5V master controllers. It's ideal for applications like gas leak detection, gas safety equipment, and air environment detection. The sensor has a wide measuring range for different gases, operates in a temperature range of - 30 to 85°C and humidity range of 5 - 95% RH (no condensation), and has a lifespan of over 2 years in the air. The circuit board size is 27mm * 37mm with mounting holes of inner diameter 3.1mm and outer diameter 6mm. You'll also get access to useful documents like the product wiki, MiCS - 4514 datasheet, schematics diagram, and dimension and component layout. The shipping list includes one Gravity MEMS CO, Alcohol, NO2 & NH3 Gas Sensor and one Gravity - 4pin I2C Cable.

Using this gas sensor is quite straightforward. First, connect it to your compatible controller like Arduino, ESP32, or Raspberry Pi using the provided Gravity - 4pin I2C Cable. Make sure the power supply is within the 3.3 - 5.5V DC range. Once connected, the sensor will start detecting the gas concentrations of CO, Alcohol, NO2, NH3, and other supported gases. You can then use the integrated conversion formulas in the code to get accurate readings. When it comes to maintenance, keep the sensor in a clean environment. Avoid exposing it to extreme temperatures outside the - 30 to 85°C range and high humidity above 95% RH. If you notice any abnormal readings, check the connections first. If the problem persists, refer to the product wiki or MiCS - 4514 datasheet for more detailed troubleshooting. Also, be aware that the sensor has a lifespan of over 2 years in the air, so plan for replacement accordingly.