Air Quality Gas Sensor (MQ-135-M)

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A versatile gas sensor module designed for detecting air quality and the presence of various gases. Ideal for environmental monitoring and smart automation projects. Based on the M Q-135 sensor, it responds to gases like CO2, NH3, NOx, alcohol, benzene, and smoke, making it useful for general air quality detection. The module provides both analog and digital outputs, with an onboard potentiometer to adjust the sensitivity of the digital trigger. Key Features Detects multiple gases (air quality monitoring) Dual output: analog + digital Adjustable sensitivity (potentiometer) Fast response time Easy integration with microcontrollers Typical Uses Air quality monitoring Gas detection systems Smart home automation DIY electronics projects Show more