1PCS MQ3 Ethanol Sensor for Breath Gas Detection Model MQ3 2025 Batch Overview A compact, reliable ethanol gas sensor designed for breath and ambient ethanol detection. The MQ3 sensor delivers precise, stable output suitable for prototypes, embedded systems, and routine sensing applications. Key benefits Accurate ethanol detection: Designed to detect ethanol vapor and breath alcohol levels with consistent response characteristics. Stable performance: 2025 batch with emphasis on repeatable output and stable baseline for easier calibration and reliable measurements. Easy integration: Standardpin interface compatible with common microcontroller development boards and analog input circuits for rapid prototyping and deployment. Spaceefficient and durable: Compact form factor that fits into small enclosures while providing robust sensing for repeated use. Function and compatibility Primary function: Gas detection focused on ethanol and breath gas sensing for measurement and monitoring purposes. Compatibility: Works with typical sensor interface circuits, analogtodigital converters, and microcontroller platforms. Suitable for integration into custom PCBs, breakout boards, and hobbyist modules. Model: MQ3 Performance highlights Precisionoriented output to support calibration and comparative measurements. Stable response across repeated measurements, helping reduce the need for frequent recalibration. Suitable for use with external signal conditioning or driver circuits to match application requirements. Physical attributes Quantity: 1 piece per package. Form factor: Compact sensor unit designed for mounting in sensor modules or prototypes. Construction: Built for electronic sensing applications with a sensing element optimized for ethanol vapor detection. Practical applications Prototype breath alcohol testers and educational projects where ethanol detection is required. Integration into vehicle or equipment monitoring systems to detect ethanol vapor presence in cabins or enclosed spaces. Laboratory or workshop monitoring for ethanol vapor during handling, storage, or smallscale processes. Home fermentation monitoring and hobbyist applications where measuring ethanol concentration is useful. What you get One MQ3 ethanol gas sensor, 2025 batch, ready for integration into electronic projects and detection systems. Notes Intended for electronic sensing and development use. Performance depends on circuit design, calibration, and environmental conditions.