# Methane CNG Gas Sensor - MQ-4

**Type:** Product page · **SKU:** SEN-09404 · **Brand:** [Sparkfun](https://core-electronics.com.au/brands/sparkfun-australia)
**Page:** https://core-electronics.com.au/methane-cng-gas-sensor-mq-4.html ([markdown](https://core-electronics.com.au/methane-cng-gas-sensor-mq-4.html.md))

This is a simple-to-use compressed natural gas (CNG) sensor, suitable for sensing natural gas (composed of mostly Methane \[CH4\]) concentrations in the air. The MQ-4 can detect natural gas concentrations anywhere from 200 to 10000ppm.

## Pricing

- **Price:** $12.45 (inc GST) — $11.32 AUD, exc GST
- **Quantity discounts:** 5+ $10.98 (exc GST) · 25+ $10.75 (exc GST) · 100+ $10.30 (exc GST)

## Availability & dispatch

- Available with a lead time — expect dispatch between Aug 24 and Aug 28.

## Description

This is a simple-to-use compressed natural gas (CNG) sensor, suitable for sensing natural gas (composed of mostly Methane \[CH4\]) concentrations in the air. The MQ-4 can detect natural gas concentrations anywhere from 200 to 10000ppm.

 This sensor has a high sensitivity and fast response time. The sensor’s output is an analog resistance. The drive circuit is very simple; all you need to do is power the heater coil with 5V, add a load resistance, and connect the output to an ADC.

 This sensor comes in a package similar to our MQ-3 alcohol sensor, and can be used with the breakout board below.

**Documents:**

- [Datasheet](https://core-electronics.com.au/attachments/localcontent/MQ-4_5397467dbe7.pdf)
- Wiring Example

## Images

- [Product image 1](https://core-electronics.com.au/media/catalog/product/m/e/methane_cng_gas_sensor_-_mq-4__sen-09404__01.jpg)