MQ3 Alcohol-Ethanol Sensor Module

The MQ3 Alcohol-Ethanol Sensor Module is a premium, trustworthy sensor engineered to identify the presence of alcohol in the atmosphere. This module is perfectly suited for a wide range of uses, such as breath alcohol analyzers, alcohol detection devices, and various safety mechanisms.

Key Attributes

• Highly sensitive to alcohol with minimal sensitivity to benzine.
• Rapid response and recovery features.
• Stable with an extended lifespan.
• Simple drive circuit design.
• Affordable and compact in size.

Technical Details

• Operating Voltage: 5V
• Detection Range: 10ppm-1000ppm Ethanol
• Heating Resistance: 31Ω±3Ω
• Heating Current: ≤180mA
• Heating Voltage: 5.0V±0.2V /1.5±0.2V
• Heating Power: ≤900mW
• Response Time: ≤10s (70% Response)
• Recovery Time: ≤30s (70% Response)

Connection Mode

1. VCC: Positive (5 v)
2. GND: Connect power negative
3. DO: TTL switch signal output
4. AO: Analog signal output

Potential Uses

• Breathalyzers: To measure alcohol concentration in a person's breath.
• Alcohol Detectors: To track alcohol levels in different settings.
• Safety Systems: Can be incorporated into safety systems to monitor alcohol levels and activate alarms.