Gravity: Analog LPG Gas Sensor (MQ5) - module with LPG sensor

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

Pololu MQ Gas Sensor Carrier

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 an analog sensor of carbon monoxide and combustible gases (methane, propane) MQ9. It is powered with the voltage of 5 V and has an analog output. DFRobot SEN0134

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

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 an analog MQ2 gas sensor. It enables the detection of LPG, butane, propane, methane, alcohol, hydrogen and smoke. It is powered with the voltage of 5 V and has an analog output

Module with sensors of environmental parameters. It allows you to measure temperature, humidity and pressure as well as CO2 and VOC concentration. DFRobot SEN0335

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.

A sensor that detects the concentration of phosphine. Equipped with a factory calibrated probe. It communicates via the I2C interface, UART or analog output. DFRobot SEN0476

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

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 concentration of sulfur dioxide. Equipped with a factory calibrated probe. It communicates via the I2C interface, UART or analog output. DFRobot SEN0470

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

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

Digital gas sensor solution that senses a wide range of Total Volatile Organic Compounds (TVOCs), including equivalent carbon dioxide (eCO2) and metal oxide (MOX) levels, intended for indoor air quality monitoring in personal devices such as watches and phones, but we’ve put it on a breakout board so you can use it as a regular I2C device. SEN-14193