MQ 3 Gas Sensor for Alcohol and Ethanol Detection

Download Resources for MQ-3 Gas Sensor

This small gas sensor can detect alcohol and ethanol concentration levels. The MQ-3 Gas Sensor is a compact 2.5V ~ 5.0V module suitable for small applications. As the concentration level of the gas rises, the output voltage boost increases.

Features of MQ-3 Gas Sensor for Alcohol and Ethanol Detection

• Fast response
• Fast recovery
• Features boost circuit
• Sensitivity is adjustable
• Output signal indicator
• Detects concentration levels of alcohol and ethanol

Specifications of MQ-3 Gas Sensor for Alcohol and Ethanol Detection

• 2.5V ~ 5.0V Operating Voltage
• 2.0mm Mounting Holes
• Weight just 9 grams
• Compact Size: 40 x 21 (mm) | 4 x 2.1 (cm)

Using MQ-3 Gas Sensor with an MCU

• MCU.IO Digital Output – DOUT
• MCU.IO Analog Output – AOUT
• Ground Power Supply – GND
• 2.5V ~ 5.0V – VCC

Applications of MQ-3 Gas Sensor for Alcohol and Ethanol Detection

• Alcohol car alarm
• Breathalyzer

Items Included

• 1x Gas Sensor (MQ-3)
• 1x 4-PIN Jumper Wire (Custom Connector)