Gravity: CL2 Sensor - module with a chlorine concentration sensor

Module with SGP30 gas sensor. The sensor communicates via the I2C interface. SGP30 system contains several elements reacting to various metal oxides, which allows for more accurate determination of air quality. Adafruit 3709

Module with an oxygen concentration sensor in the environment. It allows you to measure the volume of oxygen in the range from 0 to 100%. It communicates via the I2C interface. DFRobot SEN0496

Module with a digital gas sensor MiCS-4514. It allows you to measure the concentration of CO, C2H5OH, H2, NO2, NH3 and communicates via the I2C interface. DFRobot SEN0377

A sensor that detects the concentration of hydrogen chloride. Equipped with a factory calibrated probe. It communicates via the I2C interface, UART or analog output. DFRobot SEN0474

Module with a sensor of formaldehyde (methanal) concentration in the air. The board is equipped with a Grove connector and communicates via the I2C or UART interface. Seeed Studio 101020972

Module with Sensirion SCD30 sensor, which enables CO2, temperature and humidity measurement. The board is equipped with a Grove connector and communicates via the I2C interface. Seeed Studio 101020634

The module with a smoke sensor and flammable gases (MQ-2) allows the measurement of gas concentrations such as natural gas, hydrogen as well as smoke and ethanol. The module has an analogue output and an output triggered by exceeding the threshold of sensitivity. modMQ-2

Module with gas sensor SGP30. It allows you to measure the content of total volatile organic compounds (TVOC), carbon dioxide equivalent (eCO2), ethanol and H2 in the air. M5Stack U088

Module with the MiCS-5524 analog gas sensor. It allows you to measure the concentration of CO, CH4, 2H5OH, C3H8, C4H10, H2, H2S and NH3. DFRobot SEN0440

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.

Pololu MQ Gas Sensor Carrier

Module with a smoke concentration sensor made in MEMS technology. It allows gas detection in the range of 10 to 1000 ppm and has an analog output. DFRobot SEN0570

Module with an analog MQ8 hydrogen sensor. It is powered with the voltage of 5 V and has an analog output. DFRobot SEN0133

Sensor that detects the concentration of ozone. Equipped with a factory calibrated probe. It communicates via the I2C interface, UART or analog output. DFRobot SEN0472

Air quality sensor module based on SGP30 system. The board has been equipped with Qwiic connectors. SparkFun SEN-16531

Formaldehyde sensor (HCHO) dedicated to measuring ambient air quality. It is used to detect whether the surrounding environment exceeds a set concentration threshold. It is powered by a voltage of 5 V to 24 V and has an output in the form of a two-state digital signal. DFRobot SEN0595