MQ-3 Alcohol & Ethanol Gas Sensor

MQ-3 Alcohol Vapor & Ethanol Gas Sensor Module

Specifically calibrated for detecting alcohol vapors and ethanol, the MQ-3 is the standard sensing element for DIY breathalyzers and laboratory vapor alarms. It offers low sensitivity to gasoline and high selectivity towards ethanol vapor.

Specifications

• Target Gas: Alcohol vapor, Ethanol
• Detection Concentration: 0.05 mg/L to 10 mg/L Alcohol
• Heater Voltage: 5.0V ± 0.2V (AC or DC)
• Outputs: Analog voltage output (AO) and Digital threshold output (DO)
• Fast Response: < 10 seconds recovery time
• Operating Temperature: -10°C to +50°C