# Smoke Sensor - MQ-2

**Type:** Product page · **SKU:** SEN-17049 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/smoke-sensor-mq-2.html ([markdown](https://core-electronics.com.au/smoke-sensor-mq-2.html.md))

The MQ-2 is a smoke and combustible gas sensor from Winsen. It can detect flammable gas in a range of 300 - 10000ppm. It's most common use is domestic gas leakage...

## Pricing

- **Price:** $7.25 (inc GST) — $6.59 AUD, exc GST
- **Quantity discounts:** 5+ $6.39 (exc GST) · 25+ $6.26 (exc GST) · 100+ $6.00 (exc GST)

## Availability & dispatch

- In stock, ships same business day if ordered before 2PM (Australia/Sydney).
- We can dispatch 2 today; more stock is typically available with a 5–11 day lead time.

## Description

The MQ-2 is a smoke and combustible gas sensor from Winsen. It can detect flammable gas in a range of 300 - 10000ppm. It's most common use is domestic gas leakage alarms and detectors with a high sensitivity to propane and smoke. The sensing material is SNO2 for which the conductivity is lower in clean environments and higher when smoke or flammable gas is present. A simple circuit makes measuring this change in conductivity and turning it into data fairly straight-forward, but does require some calibration.

For easy Solderability; use our [Gas Sensor Breakout Board](https://core-electronics.com.au/search/?q=8891).

**Documents**

- [Datasheet](https://core-electronics.com.au/attachments/localcontent/MQ-2_8110263e2f3.pdf)

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/1/7/17049-smoke_sensor_-_mq-2-02.jpg)