Product Description
Monitor the air you breathe with the MQ-135 Air Quality Sensor Module. This versatile gas sensor is specifically designed to detect a wide array of atmospheric pollutants and hazardous gases, making it the primary choice for indoor air quality monitoring systems. At Robogears, we recommend the MQ-135 for its ability to sense Ammonia ($NH_3$), Nitrogen Oxides ($NO_x$), Alcohol, Benzene, Smoke, and Carbon Dioxide ($CO_2$). The module integrates an LM393 comparator for stable digital switching and a multi-turn potentiometer to calibrate your safety thresholds. Whether you are building an automated ventilation system or a smart city pollution tracker at your Pimpri facility, the MQ-135 provides a cost-effective, multi-gas sensing solution.
Detailed Key Features
Wide-Spectrum Pollution Detection: Highly sensitive to common indoor air pollutants, providing a comprehensive "Air Quality Index" (AQI) overview for your environment.
Dual Signal Interface: Features a Digital Output (DO) for simple "Good/Bad" air quality alerts and an Analog Output (AO) for real-time concentration graphing and data logging.
Adjustable Sensitivity Threshold: The on-board potentiometer allows you to fine-tune the exact pollution level at which the digital alarm should activate.
Fast Response & High Stability: The $SnO_2$ sensing layer reacts rapidly to environmental changes and offers a long operational lifespan with consistent performance.
Integrated Visual Indicators: Includes a Power LED and a separate Signal LED that triggers instantly when air quality drops below your preset limit.
