STEMMA QT ENS160 MOX Gas Sensor - module with a gas sensor

Gravity: Formaldehyde (HCHO) Sensor is a module for measuring the concentration of formaldehyde (methane) in the air. It can be supplied with voltage in the range of 3.3 ... 6V. DFRobot SEN0231

The SCD-41 CO2, temperature and humidity sensor module provides high accuracy readings. It is equipped with a Qwiic connector and communicates via an I2C interface. SparkFun SEN-22396

Digital sensor dedicated to measuring carbon dioxide (CO2), air temperature and relative humidity. High performance, fast response and excellent stability make it an ideal solution for a variety of applications such as greenhouses, cities, poultry farms and transport stations. Seeed Studio 101991029

Volatile gas sensor module, including LPG, natural gas, natural gas

Module with CO2, temperature and humidity sensor SCD-40. Equipped with a STEMMA QT connector, it communicates via the I2C interface. Adafruit 5187

A sensor that detects the oxygen concentration. Equipped with a factory calibrated probe. It communicates via the UART interface or the analog output. Seeed Studio 101020912

Module with a gas concentration sensor MQ9, which enables the detection of carbon monoxide and combustible gases (methane, propane). The board is equipped with a Grove connector and communicates via an analog interface. Seeed Studio 101020045

Module with an ambient oxygen concentration sensor. The system allows you to measure the oxygen volume in the range up to 25% with a resolution of 0.15%. The module communicates via the I2C interface. DFRobot SEN0322

BOB-08891 - Gas Sensor Breakout Board

Carbon monoxide sensor module made in MEMS technology. It allows gas detection in the range of 5 to 5000 ppm and has an analog output. DFRobot SEN0564

The MQ-6 sensor allows the measurement of LPG, propane and isobutane. The measuring range of the sensor is in the range of 300 - 10.000 ppm, while the output receives an analog signal.

Module with BME680 sensor for measuring environmental conditions such as concentration of volatile organic compounds (VOC), atmospheric pressure, temperature and humidity. I2C or SPI communication. SparkFun SEN-16466

The MQ-4 sensor allows methane concentration measurement. The measuring range of the sensor reaches up to 10,000 ppm and an analogue signal is obtained at the output.

A sensor that detects the concentration of nitrogen dioxide. Equipped with a factory calibrated probe. It communicates via the I2C interface, UART or analog output. DFRobot SEN0471

Sensor that detects the concentration of chlorine. Equipped with a factory calibrated probe. It communicates via the I2C interface, UART or analog output. DFRobot SEN0468

The MQ-3 sensor allows you to measure the concentration of alcohol vapors. The measuring range of the sensor is in the range of 0.05 mg / L to 10mg / L, and an analogue signal is obtained at the output.