---
product_id: 62501126
title: "HANWEI Alcohol Gas Sensor MQ-3"
brand: "hanwei"
price: "HK$170"
currency: HKD
in_stock: false
category: "Computers"
url: https://www.desertcart.hk/products/62501126-hanwei-alcohol-gas-sensor-mq-3
store_origin: HK
region: Hong Kong
---

# HANWEI Alcohol Gas Sensor MQ-3

**Brand:** hanwei
**Price:** HK$170
**Availability:** ❌ Out of Stock

## Quick Answers

- **What is this?** HANWEI Alcohol Gas Sensor MQ-3 by hanwei
- **How much does it cost?** HK$170 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.hk](https://www.desertcart.hk/products/62501126-hanwei-alcohol-gas-sensor-mq-3)

## Best For

- hanwei enthusiasts

## Why This Product

- Trusted hanwei brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Description

Description: This alcohol sensor is suitable for detecting alcohol concentration on your breath, just like your common breathalyzer. It has a high sensitivity and fast response time. Sensor provides an analog resistive output based on alcohol concentration. The drive circuit is very simple, all it needs is one resistor. A simple interface could be a 0-3.3V ADC. Please review the datasheet for conversions to ppm then Wikipedia.org for BAC. Features: 5V DC or AC circuit Requires heater voltage Operation Temperature: -10 to 70 degrees C Heater consumption: less than 750mW Dimensions: 16.8mm diameter 9.3 mm height without the pins Documents: Datasheet Arduino Tutorial in Portuguese Wiring Example Arduino Breathalyzer Another Breathalyzer bildr Tutorial

## Images

![HANWEI Alcohol Gas Sensor MQ-3 - Image 1](https://images-na.ssl-images-amazon.com/images/I/41U8cNPM3qL.jpg)

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.hk/products/62501126-hanwei-alcohol-gas-sensor-mq-3](https://www.desertcart.hk/products/62501126-hanwei-alcohol-gas-sensor-mq-3)

---

*Product available on Desertcart Hong Kong*
*Store origin: HK*
*Last updated: 2026-02-21*