MQ3 SENSOR

MQ3 Gas Sensor – The MQ3 is a popular alcohol gas sensor used for detecting the presence of ethanol and other gases such as alcohol vapors, smoke, and carbon dioxide. It operates on a 5V power supply and is commonly used in breathalyzers, air quality monitoring systems, and safety devices. The sensor works by measuring the resistance of a heated sensing element exposed to the target gas. As the concentration of the gas increases, the resistance changes, allowing the sensor to detect and quantify the gas. The MQ3 sensor is highly sensitive, cost-effective, and easy to integrate with microcontrollers like Arduino for various gas detection applications.