Gravity: Analog Gas Sensor (MQ2) - module with a gas sensor

Module with a gas concentration sensor MQ2, which enables the detection of LPG, butane, propane, methane, alcohol, hydrogen and smoke. The board is equipped with a Grove connector and communicates via an analog interface. Seeed Studio 101020055

Module with air quality sensor SGP30. It allows you to read the concentration of VOC (TVOC) and eCO2 and communicates via the I2C interface. Pimoroni PIM480

Module with BME680 for measuring the concentration of VOC, pressure, temperature and humidity. Equipped with a STEMMA QT connector, it communicates via I2C or SPI. Adafruit 3660

A sensor that detects the concentration of carbon monoxide. Equipped with a factory calibrated probe. It communicates via the I2C interface, UART or analog output. DFRobot SEN0466

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

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

SCD41 CO2, temperature and humidity sensor module. Equipped with a Gravity connector, it communicates via an I2C interface. DFRobot SEN0536

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

Module with LPG gas concentration sensor (MQ-6) in the range of 200 - 10,000 ppm. The module has an analogue output and a digital output triggered by exceeding the threshold of sensitivity. modMQ-6

Methane sensor module made in MEMS technology. It allows gas detection in the range of 1 to 10000 ppm and has an analog output. DFRobot SEN0565

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

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

Air quality sensor module based on the SGP40 system. It uses CMOSens® technology by Sensirion and provides information on air quality. Waveshare SGP40 VOC Sensor

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

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.

Gravity: UART Infrared CO2 Sensor is a high precision CO2 sensor. It uses the UART interface for communication. It allows to measure CO2 content in the air in the range of 0 ... 50000ppm. DFRobot SEN0220