MQ3 Alcohol Gas Sensor Module 2Pack Sensitivity Ethanol Detector for Arduino Projects

Style MQ3 Description A compact alcohol sensor module optimized to detect ethanol vapor with sensitivity. The module provides reliable analog voltage and TTL digital outputs for straightforward integration into microcontroller projects. Builtin sensitivity adjustment and low power operation make it suitable for prototyping, safety systems, and environmental monitoring. Key benefits Precise alcohol detection: Optimized for ethanol vapor to give reliable responses in breathalyzer prototypes and alcohol sensing applications. Wide detection range: Measures alcohol concentrations from 0.05 to 10 mg/L and also responds to benzene, hexane, and other volatile organic compounds for broader VOC awareness. Flexible outputs: Dual output signals include analog voltage for proportional measurement and TTL digital output for thresholdtriggered alerts, simplifying use with microcontrollers. Easy calibration: Onboard potentiometer lets you adjust the detection threshold to match application needs without extra components. Low power, simple power requirements: Operates at 5V DC with typical power consumption at or below 800 mW, suitable for battery or mainspowered systems. Compatibility and integration Designed for straightforward connection to common microcontrollers and development boards such as Arduino, ESP32, and Raspberry Pi using analog and digital inputs. Suitable for rapid prototyping and embedded projects where compact sensing and configurable thresholds are required. Typical applications Breathalyzer and alcohol level prototypes for educational and development projects. Workplace or industrial safety systems that monitor alcohol vapor or detect solvent leaks. Environmental monitoring and air quality projects that track VOC presence including benzene and hexane. Performance notes Provides both proportional analog output and a digital TTL signal for threshold events. Sensitivity is adjustable via the onboard potentiometer to balance false positives and detection responsiveness. Responds to multiple VOCs; consider crosssensitivity when interpreting readings in mixedgas environments.