Grove Formaldehyde Sensor (SFA30) - HCHO concentration measurement module

Module with CO2, temperature and humidity sensor SCD-41. Equipped with a STEMMA QT connector, it communicates via the I2C interface. Adafruit 5190

The module with the sensor for the measurement of the concentration of carbon monoxide (MQ-7), allows the measurement of the concentration of carbon (CO) in the air. The module has an analogue output and an output triggered by exceeding the threshold of sensitivity.

I2C BME680 Environmental Sensor is a gas, pressure, temperature and humidity sensor in one MEMS housing. The module is supplied with 3.3-5V, for communication the I2C or SPI interface is used. DFRobot SEN0248

Module with an analog MQ7 carbon monoxide sensor. It is powered with the voltage of 5 V and has an analog output. DFRobot SEN0132

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.

The MQ-7 sensor allows you to measure the concentration of carbon monoxide (carbon monoxide). The measuring range of the sensor is in the range of 10 - 10,000 ppm

Module with MQ5 LPG concentration sensor. The board is equipped with a Grove connector and communicates via an analog interface. Seeed Studio 101020056

Module with the MQ3 analog alcohol sensor. It allows you to detect gas and build a simple breathalyzer. The module is powered by 5 V and has an analog output

ENS160 gas sensor module to measure the concentration of carbon dioxide (eCO2) and volatile organic compounds (TVOC) in the air. It communicates via an I2C or SPI interface. SparkFun SEN-20844

Air quality sensor module based on the SGP40 system. It uses CMOSens technology by Sensirion and provides information on the concentration of volatile organic compounds (VOC). Adafruit 4829

Module with a knock-on sensor for measurement of methane, propane and carbon monoxide (MQ-9) concentrations. The module has an analogue output and an output triggered by exceeding the threshold of sensitivity.

Module with the alcohol sensor MQ303A. The board is equipped with a Grove connector and communicates via an analog interface. Seeed Studio 101020044

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

The MQ-8 sensor allows the measurement of hydrogen concentration in the air. The measuring range of the sensor is in the range of 100 - 10,000 ppm.

Module with a VOC sensor (volatile organic compounds) made in MEMS technology. It allows gas detection in the range of 5 to 500 ppm and has an analog output. DFRobot SEN0566

Air quality sensor module based on the SGP40 system. The board is equipped with Qwiic connectors. SparkFun SEN-18345