# Analog Alcohol Sensor (MQ3)

**Type:** Product page · **SKU:** SEN0128 · **Brand:** [DFRobot](https://core-electronics.com.au/brands/dfrobot-australia)
**Page:** https://core-electronics.com.au/analog-alcohol-sensor-mq3.html ([markdown](https://core-electronics.com.au/analog-alcohol-sensor-mq3.html.md))

The analog gas sensor - MQ3 is suitable for detecting alcohol, this sensor can be used in a Breathalyser. It has a high sensitivity to alcohol and small sensitivity to Benzene.

## Pricing

- **Price:** $11.45 (inc GST) — $10.41 AUD, exc GST
- **Quantity discounts:** 6+ $9.89 (exc GST) · 12+ $9.47 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 2 today, and up to 100 more in 8–12 days.

## Description

The analog gas sensor - MQ3 is suitable for detecting alcohol, this sensor can be used in a Breathalyser. It has a high sensitivity to alcohol and small sensitivity to Benzene. The sensitivity can be adjusted by the potentiometer. Specification

- Power supply needs: 5V
- Interface type: Analog
- Pin Definition: 1-Output 2-GND 3-VCC
- High sensitivity to alcohol and small sensitivity to Benzene
- Fast response and High sensitivity
- Stable and long life
- Simple drive circuit
- Size: 40x20mm
 
 Parts List - Analog Gas sensor (MQ3) 1unit
 
 Documents - [Wiki Doc](https://wiki.dfrobot.com/Analog_Gas_Sensor_MQ3__SKU_SEN0128)
- [MQ3 datasheet](https://core-electronics.com.au/attachments/localcontent/SEN0128_MQ-3_61243d8f47f.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/_/i/_igp1308-1.jpg)