Gas & Air quality

Ensure a safe and healthy environment with our High-Precision Electrochemical Cl₂ Gas Sensor Breakout. This advanced sensor module is specifically designed to detect chlorine gas (Cl₂) with exceptional accuracy, making it ideal for a range of applications, from industrial monitoring to environmental studies.

The breakout board works with both 3.3V and 5V power supplies. The EasyC connector provides a fast and easy connection with the microcontroller board. The board provides both analog and digital output with integrated ADC. The analog front end is fully programmable with I2C communication.

This breakout board is perfect for industrial safety, environmental monitoring, and research projects and provides a reliable foundation for precise gas detection solutions. Integrate this sensor into your systems to ensure timely alerts and maintain optimal safety standards.

Ensure a safe and healthy environment with our High-Precision Electrochemical H₂S Gas Sensor Breakout. This advanced sensor module is specifically designed to detect hydrogen sulfide (H₂S) with exceptional accuracy, making it ideal for a range of applications, from industrial monitoring to environmental studies.

The breakout board works with both 3.3V and 5V power supplies. The EasyC connector provides a fast and easy connection with the microcontroller board. The board provides both analog and digital output with integrated ADC. The analog front end is fully programmable with I2C communication.

This breakout board is perfect for industrial safety, environmental monitoring, and research projects and provides a reliable foundation for precise gas detection solutions. Integrate this sensor into your systems to ensure timely alerts and maintain optimal safety standards.

Ensure a safe and healthy environment with our High-Precision Electrochemical NH₃ Gas Sensor Breakout. This advanced sensor module is specifically designed to detect ammonia (NH₃) with exceptional accuracy, making it ideal for a range of applications, from industrial monitoring to environmental studies.

The breakout board works with both 3.3V and 5V power supplies. The EasyC connector provides a fast and easy connection with the microcontroller board. The board provides both analog and digital output with integrated ADC. The analog front end is fully programmable with I2C communication.

This breakout board is perfect for industrial safety, environmental monitoring, and research projects and provides a reliable foundation for precise gas detection solutions. Integrate this sensor into your systems to ensure timely alerts and maintain optimal safety standards.

Ensure a safe and healthy environment with our High-Precision Electrochemical O₃ Gas Sensor Breakout. This advanced sensor module is specifically designed to detect ozone (O₃) with exceptional accuracy, making it ideal for various applications, from industrial monitoring to environmental studies.

The breakout board works with both 3.3V and 5V power supplies. The EasyC connector provides a fast and easy connection with the microcontroller board. The board provides both analog and digital output with integrated ADC. The analog front end is fully programmable with I2C communication.

This breakout board is perfect for industrial safety, environmental monitoring, and research projects and provides a reliable foundation for precise gas detection solutions. Integrate this sensor into your systems to ensure timely alerts and maintain optimal safety standards.

Ensure a safe and healthy environment with our High-Precision Electrochemical CO Gas Sensor Breakout. This advanced sensor module is specifically designed to detect carbon monoxide (CO) with exceptional accuracy, making it ideal for a range of applications, from industrial monitoring to residential safety systems.

The breakout board works with both 3.3V and 5V power supplies. The EasyC connector provides a fast and easy connection with the microcontroller board. The board provides both analog and digital output with integrated ADC. The analog front end is fully programmable with I2C communication.

This breakout board is perfect for industrial safety, environmental monitoring, and research projects and provides a reliable foundation for precise gas detection solutions. Integrate this sensor into your systems to ensure timely alerts and maintain optimal safety standards.

Ensure a safe and healthy environment with our High-Precision Electrochemical NO Gas Sensor Breakout. This advanced sensor module is specifically designed to detect nitric oxide (NO) with exceptional accuracy, making it ideal for a range of applications, from industrial monitoring to environmental studies.

The breakout board works with both 3.3V and 5V power supplies. The EasyC connector provides a fast and easy connection with the microcontroller board. The board provides both analog and digital output with integrated ADC. The analog front end is fully programmable with I2C communication.

This breakout board is perfect for industrial safety, environmental monitoring, and research projects and provides a reliable foundation for precise gas detection solutions. Integrate this sensor into your systems to ensure timely alerts and maintain optimal safety standards.

Ensure a safe and healthy environment with our High-Precision Electrochemical NO₂ Gas Sensor Breakout. This advanced sensor module detects nitrogen dioxide (NO₂) with exceptional accuracy, making it ideal for various applications, from industrial monitoring to environmental studies.

The breakout board works with both 3.3V and 5V power supplies. The EasyC connector provides a fast and easy connection with the microcontroller board. The board provides both analog and digital output with integrated ADC. The analog front end is fully programmable with I2C communication.

This breakout board is perfect for industrial safety, environmental monitoring, and research projects and provides a reliable foundation for precise gas detection solutions. Integrate this sensor into your systems to ensure timely alerts and maintain optimal safety standards.

Ensure a safe and healthy environment with our High-Precision Electrochemical SO₂ Gas Sensor Breakout. This advanced sensor module is specifically designed to detect sulfur dioxide (SO₂) with exceptional accuracy, making it ideal for a range of applications, from industrial monitoring to environmental studies.

The breakout board works with both 3.3V and 5V power supplies. The EasyC connector provides a fast and easy connection with the microcontroller board. The board provides both analog and digital output with integrated ADC. The analog front end is fully programmable with I2C communication.

This breakout board is perfect for industrial safety, environmental monitoring, and research projects and provides a reliable foundation for precise gas detection solutions. Integrate this sensor into your systems to ensure timely alerts and maintain optimal safety standards.

Expand your gas detection capabilities with our versatile High Precision Electrochemical Gas Sensor Breakout, designed to work with a variety of electrochemical sensors. This breakout board provides the necessary interface and support for integrating different types of gas sensors, allowing you to customize your gas detection solutions to meet specific needs.

The breakout board works with both 3.3V and 5V power supplies. The EasyC connector provides a fast and easy connection with the microcontroller board. The board provides both analog and digital output with integrated ADC. The analog front end is fully programmable with I2C communication.

Compatible sensors:

• Sulfur Dioxide (SO₂) SGX-4SO2 : Detection Range: 0-20 ppm
• Nitric Oxide (NO) SGX-4NO-250: Detection Range: 0-250 ppm
• Nitrogen Dioxide (NO₂) SGX-4NO2: Detection Range: 0-30 ppm
• Carbon Monoxide (CO) SGX-4CO: Detection Range: 0-2000 ppm
• Ozone (O₃) SGX-4O3-20: Detection Range: 0-20 ppm
• Ammonia (NH₃) SGX-4NH3-300: Detection Range: 0-300 ppm
• Hydrogen Sulfide (H₂S) SGX-4H2S-100: Detection Range: 0-100 ppm
• Chlorine (Cl₂) SGX-4CL2: Detection Range: 0-10 ppm

Protect your place from dangerous organic compounds with the MQ138 formaldehyde sensor. Formaldehyde, benzene, toluene, and acetone are invisible health hazards commonly found in new furniture, building materials, paints, and cleaning products – but now you can detect them before they become a problem. Perfect for indoor air quality monitoring, smart home safety systems, and industrial hygiene applications, this intelligent sensor features an onboard microcontroller for accurate, calibrated readings through the convenient Qwiic interface. 

Engineered with an integrated microcontroller, this sensor delivers pre-calibrated readings through the Qwiic interface, eliminating analog signal processing and calibration requirements. Please note that you will have to use our Arduino library for the project to ensure correct communication with the onboard microcontroller. Don’t worry, using our documentation, you should find it easy to get started. The digital output provides reliable, consistent measurements while the Qwiic system enables tool-free connection to all Soldered development boards and others which support the Qwiic/easyC/STEMMA-QT interface. The 3.3V operation with onboard regulation ensures compatibility with modern microcontroller systems, while four mounting holes enable secure installation in monitoring applications.

This sensor is ideal for detecting formaldehyde levels in new homes, furniture, and workplace safety monitoring. The LED indicator provides immediate visual feedback when harmful VOC levels are detected. Allow an initial heat-up period (48 hours first run and then each consecutive run 5 mins heat up time) for optimal accuracy. The sensor provides relative concentration readings perfect for trend monitoring and threshold detection. Ideal for triggering ventilation systems or safety alerts. Four mounting holes enable permanent installation in HVAC systems, indoor air quality monitors, or portable testing devices. Compatible with Arduino, Raspberry Pi, and ESP32 through the Qwiic interface. Includes documentation and example code for immediate implementation in air quality monitoring projects. Custom selectable I2C address via onboard switch ensures compatibility with existing projects.

The sensitivity and selectivity of the MQ137 sensor allow it to effectively detect and measure levels of ammonia, making it a valuable tool for applications such as gas leakage detection, agricultural monitoring, and environmental sensing. By integrating the MQ137 sensor with appropriate electronic circuits and microcontrollers like Dasduino, you can create systems that provide real-time monitoring and prompt alerts in the presence of hazardous ammonia concentrations. It requires a short time to heat up in order to work correctly.

The breakout board provides digital and analog information through the easyC system. Sensor readings are obtained through easyC.

Product usage tips:

When gas is detected, the LED will start glowing. It will remain off if it doesn’t detect anything. Four mounting holes enable easy mounting to surfaces. The board comes with three male headers.

The versatility of the MQ135 sensor allows for its use in applications such as indoor air quality monitoring, gas leakage detection, and environmental sensing. While its main target gas is carbon dioxide (CO2), it is also sensitive to various other gases, including volatile organic compounds (VOCs), alcohol vapors, benzene, smoke, and other harmful gases commonly found in the environment. By integrating the MQ135 sensor with appropriate electronic circuits and microcontrollers like Dasduino, you can create systems that enable real-time monitoring and analysis of gas concentrations, allowing you to take necessary actions to maintain a healthy and safe environment.

The MQ135 air quality measurement module operates at 5V and consumes approximately 150mA. It requires some time to heat up before it can provide accurate results.

The breakout board provides digital and analog information through the easyC system. Sensor readings are obtained through easyC.

Product usage tips:

When gas is detected, the LED will start glowing. It will remain off if it doesn’t detect anything. Four mounting holes enable easy mounting to surfaces. The board comes with three male headers.

The MQ131-H is the high concentration version of the MQ131 ozone sensor, designed for detecting ozone (O₃) levels in the 10–1000 ppm range. This sensor offers good sensitivity to O₃ and operates on the semiconductor detection principle, making it ideal for industrial and environmental applications.

The sensitivity and selectivity of the MQ131 sensor enable it to effectively detect and measure ozone levels, making it a valuable tool for applications such as air quality monitoring, ozone generators, and ozone leakage detection systems. By integrating the MQ131 sensor with appropriate electronic circuits and microcontrollers like Dasduino, you can create systems that enable real-time monitoring of ozone concentration and trigger alerts when dangerous levels are detected.

The breakout board provides digital and analog readings via the easyC system, allowing smooth integration with platforms that support this interface. Sensor data is easily accessible through easyC.

Product usage tips:

• • When gas is detected, the LED will light up. It will remain off if no gas is detected.

  • The board includes four mounting holes for easy installation.

  • Comes with three male headers for UPDI programming the onboard ATTINY, which is not required for normal usage

We are surrounded by invisible gases everywhere. Although we generally don’t have to worry about them, in certain circumstances they can be very flammable and dangerous. The MQ9 breakout detects carbon monoxide, methane, propane and other flammable gases so that the right measures can be taken in time. The sensor detects carbon monoxide at 10-1000 ppm and other flammable gases at 100-10000 ppm.

The breakout board provides digital and analog information via the easyC system. Sensor readings are obtained via easyC.

Product usage tips:

When gas is detected, the LED will start glowing. It will remain off if it doesn’t detect anything. Four mounting holes enable easy mounting to surfaces. The board comes with three male headers.

Hydrogen is all around us, and it is dangerous because it is highly flammable. Its leakage can be very dangerous for both life and property. That is why it is important to detect any leakage to prevent such losses in the industry. To do this, hydrogen sensors such as the MQ8 breakout board are used. The sensor detects hydrogen in the range of 100-1000 ppm.

The breakout board provides digital and analog information via the easyC system. Sensor readings are obtained via easyC.

Product usage tips:

When gas is detected, the LED will start glowing. It will remain off if it doesn’t detect anything. Four mounting holes enable easy mounting to surfaces. The board comes with three male headers.

The sensitivity and selectivity of the MQ7 sensor enable it to effectively detect and measure carbon monoxide levels, making it a crucial tool for applications such as gas leakage detection, security systems, and environmental monitoring. By integrating the MQ7 sensor with appropriate electronic circuits and microcontrollers like Dasduino, you can create systems that enable real-time monitoring and prompt alerts in the presence of hazardous CO concentrations. It requires a short time to warm up in order to work correctly.

The breakout board provides digital and analog information through the easyC system. Sensor readings are obtained through easyC.

Product usage tips:

When gas is detected, the LED will start glowing. It will remain off if it doesn’t detect anything. Four mounting holes enable easy mounting to surfaces. The board comes with three male headers.

Humans can detect many smells, but may have difficulty distinguishing gases. That’s why we use sensors like the MQ6 that detects LPG and butane in the air. When heated to the optimal operating temperature, it very quickly detects changes in air concentration between 200 and 10,000 ppm.

The breakout board provides digital and analog information via the easyC system. Sensor readings are obtained via easyC.

Product usage tips:

When gas is detected, the LED will start glowing. It will remain off if it doesn’t detect anything. Four mounting holes enable easy mounting to surfaces. The board comes with three male headers.

Is your office located near a high traffic area? Are you concerned about the presence of natural and liquefied petroleum gases in your work environment? The MQ series sensors can help detect various gases, and the MQ5 sensor is an easy-to-use sensor that provides information about the levels of natural gases and LPG (liquefied petroleum gas) in your surroundings. It quickly detects gas particles in the range of 200 to 10,000 ppm.

The breakout board provides digital and analog information through the easyC system. Sensor readings are obtained through easyC.

Product usage tips:

When gas is detected, the LED will start glowing. It will remain off if it doesn’t detect anything. Four mounting holes enable easy mounting to surfaces. The board comes with three male headers.

Have you ever wondered how much natural gas and methane are present in your living room? You can easily measure it! The MQ4 breakout board is a user-friendly sensor that detects natural gas and methane (CH4) in the air. Once it reaches operating temperature, it quickly detects changes in air concentration within the range of 200 to 10,000 ppm.

The breakout board provides digital and analog information through the easyC system. Sensor readings are obtained through easyC.

Product usage tips:

When gas is detected, the LED will start glowing. It will remain off if it doesn’t detect anything. Four mounting holes enable easy mounting to surfaces. The board comes with three male headers.

MQ sensors, including the MQ3 sensor, have the capability to detect various gases. The MQ3 sensor is specifically designed to detect alcohol vapors. This means it is sensitive to alcohols such as methanol, ethanol, and isopropanol. The MQ3 sensor is commonly used for measuring alcohol concentration in the air and serves as a useful tool for alerting to the presence of alcohol in the environment.

It is important to note that MQ sensors are not specific to only one gas and can react to other gases besides the ones they are specifically designed for. Therefore, it is important to use the MQ3 sensor exclusively for alcohol detection and follow the manufacturer’s instructions to achieve optimal accuracy and reliability of measurements. It requires a short time to heat up in order to work correctly.

The breakout board provides digital and analog information through the easyC system. Sensor readings are obtained through easyC.

Product usage tips:

When gas is detected, the LED will start glowing. It will remain off if it doesn’t detect anything. Four mounting holes enable easy mounting to surfaces. The board comes with three male headers.

MQ sensors, including the MQ2 sensor, have the capability to detect various gases. The MQ2 sensor is specifically designed to detect combustible gases such as LPG (liquefied petroleum gas), butane, propane, methane, alcohol, hydrogen, and smoke. These gases are commonly found in residential, industrial, and automotive environments. The sensor’s sensitivity and responsiveness enable it to detect even trace amounts of these gases, making it a valuable tool for gas leakage detection, fire detection, and air quality monitoring. It takes a short time to heat up in order to work correctly.

The breakout board provides digital and analog information through the easyC system. Sensor readings are obtained through easyC.

Product usage tips:

When gas is detected, the LED will start glowing. It will remain off if it doesn’t detect anything. Four mounting holes enable easy mounting to surfaces. The board comes with three male headers.

The MQ138 sensor is specifically designed to detect various gases, with a primary focus on air quality monitoring. While its main target gas is formaldehyde (HCHO), it is also sensitive to a range of other gases, including volatile organic compounds (VOCs – toulen, alcohol, acetone and hydrogen) and other harmful gases commonly found in the environment. It takes a short time to heat up in order to work correctly.

The breakout board works with both digital (DO) and analog signals (AO). The digital output is obtained by setting a threshold value with a potentiometer. The analog output will differ depending on the intensity of the gas.

Product usage tips:

When gas is detected, the LED will start glowing. It will remain off if it doesn’t detect anything. Two mounting holes enable easy mounting to surfaces. The board comes with four male headers that need to be soldered.

The MQ137 sensor’s sensitivity and selectivity allow it to effectively detect and measure ammonia levels, making it a valuable tool for applications such as gas leakage detection, agricultural monitoring, and environmental sensing. By integrating the MQ137 sensor with appropriate electronic circuits and microcontrollers like Dasduino, you can create systems that provide real-time monitoring and prompt alerts in the presence of hazardous ammonia concentrations. It takes a short time to heat up in order to work correctly.

The breakout board works with both digital (DO) and analog signals (AO). The digital output is obtained by setting a threshold value with a potentiometer. The analog output will differ depending on the intensity of the gas.

Product usage tips:

When gas is detected, the LED will start glowing. It will remain off if it doesn’t detect anything. Two mounting holes enable easy mounting to surfaces. The board comes with four male headers that need to be soldered.

Monitor your indoor air quality and protect your health with this versatile MQ135 multi-gas sensor. Perfect for detecting dangerous CO2 levels, organic compounds (VOCs), ammonia, benzene, and smoke in homes, offices, and workshops. Whether you’re building a smart home air quality system, creating environmental monitoring stations, or developing safety alert systems, this Arduino compatible sensor provides real-time gas detection with both analog and digital outputs. With our comprehensive documentation and library, you should be set to start working on your projects quickly!

This breakout board provides both digital (DO) and analog (AO) outputs for maximum flexibility. The digital output features an adjustable threshold via an onboard potentiometer, enabling custom trigger points for alarm systems and automated responses. The analog output delivers proportional voltage readings (0-5V) corresponding to gas concentration levels, perfect for data logging and monitoring applications. Operating at 5V with 150mA consumption, the sensor includes pre-heating circuitry for accurate readings and features mounting holes for permanent installations. The compact 22x38mm form fits easily into enclosures while providing environmental sensing capabilities.

Allow an initial pre–heating (48 hours first run and then each consecutive run 5 mins heat up time) period for optimal accuracy and stability. The MQ135 sensor provides relative gas concentration readings for trend monitoring and threshold detection. For precise measurements, calibration with known gas concentrations is recommended. Compatible with 5V microcontroller systems. Includes documentation, example code, and wiring diagrams to get your air quality monitoring project running. Perfect for smart home automation, environmental research, and safety monitoring applications.