The MQ135 Gas Sensor Module is designed for detecting harmful gases such as hydrogen sulfide (H2S), ammonia, and other air pollutants. This sensor is ideal for air quality monitoring systems, pollution detection, and environmental safety applications. With its ability to detect a wide range of gases, the MQ135 is frequently used in air purifiers, ventilation systems, and industrial monitoring. The sensor offers reliable performance in identifying hazardous gases, providing early warning signs for health and safety concerns. In Bangladesh, this sensor is perfect for both personal and professional projects focused on improving air quality and protecting environments from harmful pollutants. Its versatility and sensitivity make it an essential tool for any air quality-related application.