Gas and Air Quality Sensors

The air quality monitoring module detects reducing and oxidizing gases such as CO, NO2, NH3, ethanol, or H2, providing two separate analog outputs RO and OX for clear readings. Compatible with Arduino, operates at 5V, and includes an En pin for heater control and optimal power consumption. Compact size 17x14 mm, ideal for smart home projects and industrial applications.

Compact air quality monitoring module, measures CO2, temperature and humidity, ideal for IoT, HVAC and automation. Communicates quickly via I2C at address 0x62, operates at 2.4-5.5 V for compatibility with 3.3V and 5V, offers CO2 measurement up to 40000 ppm and low consumption for continuous or low-power use.

MICS-5524 sensor module for air quality monitoring and VOC detection, ideal for Arduino projects, automation and industrial applications. Measures total levels of multiple gases such as CO, NO2, H2, NH3 and hydrocarbons, provides easy-to-read analog output on a single pin, operates at 5V and includes Enable pin for heater control and low power consumption.

Compact solution for monitoring indoor air quality, measuring temperature and humidity and detecting VOC for smart home and HVAC automation. It connects quickly to Arduino and other platforms via I2C or SPI, operates at 5V with low consumption of approximately 10mA, offers a wide measurement range and is easy to mount due to its small size.

MQ137-based sensor module for detecting ammonia NH3 and carbon monoxide CO, ideal for air monitoring projects and security systems. It offers 0-5V analog output for concentration estimation and TTL digital output with LM393 comparator, has adjustable threshold from potentiometer and fast response under 1s, operates at 5V and is compatible with Arduino, ESP32 and Raspberry Pi.

NDIR sensor for measuring CO2 in the range of 400-5000 ppm, ideal for monitoring air quality in domestic and light industrial projects. It has temperature compensation, 3.3 V TTL UART output and PWM for quick integration with Arduino, ESP or STM32. It operates at 5 V, warms up in about 1 minute, T90 response under 120 s and average consumption under 40 mA.

Compact module for real-time air quality monitoring, detects VOC and NOx with Sensirion MOX technology, I2C communication for quick integration with Arduino, ESP32, Raspberry Pi or STM32, operates at low voltage 1.62-1.98V ideal for battery-powered devices, suitable for smart home, HVAC, purifiers and portable weather stations.

Air quality monitoring module, detects CO, VOC, NO2 and NH3 with the MICS-6814 sensor, ideal for Arduino projects, smart home automation and industrial applications. It operates at 5V, offers separate analog outputs for each gas, has low consumption of approximately 30mA and compact dimensions of 17 x 14 mm.

Sensor for monitoring fine dust, pollen or smoke particles in Arduino projects and other development boards, operates at 5V and has analog output for fast integration, good sensitivity for air quality measurements and stable response, low current with peaks up to 20mA. Comes with cable with connector, 220uF capacitor and 150 ohm resistor for easy connection.

Ideal for Arduino projects and safety systems, this sensor detects a wide range of gases such as LPG, H2, CH4, CO, alcohol, smoke and propane. It operates at 5VDC, offers analog or digital output for fast integration, covers concentrations from approximately 300 to 1000 ppm and allows simple monitoring by reading on A0 and displaying in Serial.

Alcohol and ethanol vapor detection module, ideal for Arduino projects and safety automation. It operates at 5V and has low consumption, offers 0-5V analog output with variable level depending on concentration, plus TTL digital output for thresholds, simple integration thanks to the LM393 comparator.

Methane and natural gas detection module, ideal for Arduino projects and leak monitoring systems. Operates at 5V, SnO2 sensor with good sensitivity in the range of 300-10000ppm, offers 0-5V analog output proportional to concentration and TTL digital output for settable thresholds, easy to integrate by reading on A0.

Ideal for Arduino projects and security systems, detects natural gas, LPG and coal smoke quickly and stably. Powered by 5VDC, consumption approx. 150mA, offers 0-5V analog output proportional to concentration and TTL digital output for thresholds, has good resistance to alcohol and smoke interference.

MQ-6 based gas detection module for monitoring LPG, propane, butane and LNG leaks in Arduino projects or industrial systems. It operates at 5V, offers 0-5V analog output proportional to concentration and TTL digital output for thresholds, has good resistance to ethanol and smoke interference, fast integration by reading on analog or digital pin.

Detects carbon monoxide in homes and DIY projects, with a measurement range of 10-1000 ppm. Operates at 5V and requires preheating for stable readings. Offers 0-5V analog output for precise value and TTL digital output with adjustable threshold from potentiometer. Can be used with Arduino or standalone.

The MQ-8 sensor is ideal for detecting hydrogen in Arduino projects and industrial monitoring applications, it operates at 5VDC with low consumption, has a 0-5V analog output that varies with the detected concentration and a TTL digital output for thresholds, and is resistant to interference with ethanol, CO2 and other gases for more stable measurements.

Module for detecting carbon monoxide and other combustible gases, ideal for Arduino projects and air monitoring systems. Detects 10-1000ppm CO and 10-1000ppm combustion gases, operates at 5V with low consumption, provides 0-5V analog output proportional to concentration and TTL digital output for alarm thresholds.

Air quality monitoring module, detects ammonia, gasoline vapor, smoke and other harmful gases, based on SnO2 which changes its conductivity depending on the pollution level. It operates at 5V with low consumption, offers 0-5V analog output for continuous measurement and TTL digital output for settable thresholds, easy to integrate with Arduino and other microcontrollers.

The module with BME680 for 3.3V, I2C communication, offers complete environmental monitoring by measuring temperature, humidity, pressure and air quality based on VOC. Ideal for weather stations, automation and IoT projects, it allows altitude estimation and tracking indoor or outdoor pollution trends, with low power consumption and fast integration on development boards.