Gravity: NO2 Sensor - module with a nitrogen dioxide concentration sensor

A sensor that detects the concentration of hydrogen. Equipped with a factory calibrated probe. It communicates via the I2C interface, UART or analog output. DFRobot SEN0473

MH-Z16 carbon dioxide sensor with Grove connector. It communicates via the UART interface. Seeed Studio 101020067

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

The MQ-9 sensor allows the measurement of gas concentrations such as carbon monoxide, propane and methane. Sensor measuring range: 10 - 10,000 ppm

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

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

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

Integrated gas sensor, pressure, humidity and temperature in the LGA-8 housing. Bosch Sensortec BME680

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

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 module with an alcohol sensor (MQ-3), allows you to measure the concentration of ethanol in the air. The module has an analogue output and an output triggered by exceeding the threshold of sensitivity.

Module with nitrogen dioxide sensor made in MEMS technology. It allows gas detection in the range of 0.1 to 10 ppm and has an analog output. DFRobot SEN0574

Air quality sensor module based on the SGP40 system. It communicates via the I2C interface. DFRobot SEN0392

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.

Adapter for MQ gas sensor with potentiometer for analog signal calibration. MOD 72

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