MQ-3 Alcohol Ethanol Detection Sensor Module

Product Description Overview · Sensitive for alcohol, ethanol · Output voltage boosts along with the concentration of the measured gases increases · Fast response and recovery · Adjustable sensitivity · Signal output indicator Specifications · Power: 2.5V ~ 5.0V · Dimension: 40.0mm * 21.0mm ·...

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Product Details

Product Description

Overview

· Sensitive for alcohol, ethanol

· Output voltage boosts along with the concentration of the measured gases increases

· Fast response and recovery

· Adjustable sensitivity

· Signal output indicator

Specifications

· Power: 2.5V ~ 5.0V

· Dimension: 40.0mm * 21.0mm

· Mounting holes size: 2.0mm

Applications

· Car alcohol alarm

· Breathalyser

How to Use

In the case of working with a MCU:

· VCC ? 2.5V ~ 5.0V

· GND ? power supply ground

· AOUT ? MCU.IO (analog output)

· DOUT ? MCU.IO (digital output)


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