Gravity: MEMS Gas Sensor - module with MiCS-4514 gas sensor

Module with an analog gas sensor. It allows you to measure the concentration of NO, NO2 and H2. DFRobot SEN0441

Sensor that detects the concentration of chlorine. Equipped with a factory calibrated probe. It communicates via the I2C interface, UART or analog output. DFRobot SEN0468

The SCD-40 CO2, temperature and humidity sensor module provides high accuracy readings. It is equipped with a Qwiic connector and communicates via an I2C interface. SparkFun SEN-22395

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

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

Module with a formaldehyde sensor made in MEMS technology. It allows gas detection in the range of 0 to 3 ppm and has an analog output. DFRobot SEN0563

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 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 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. DFRobot SEN0127

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

Module with a CO2 sensor based on the XENSIV PAS CO2 system from Infineon. It enables precise measurement of CO2 concentration in ppm via I2C, UART and PWM interfaces. SparkFun SEN-2295

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

A sensor used to detect pollutants in the air by measuring gases such as hydrogen, ethanol and carbon monoxide. It is used in various areas, such as the food industry, chemical industry, air quality control in laboratories and environmental monitoring. Figaro TGS2600

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: Analog Infrared CO2 Sensor is a high precision analogue CO2 sensor. It measures CO2 content in the range of 0 ... 5000ppm and is compatible with all devices with ADC function. DFRobot SEN0219