Flammable Gas & Smoke Sensor MQ-2

SKU: POLOLU-1480

$5.52 AUD, inc GST

$5.02 AUD, exc GST

Flammable Gas & Smoke Sensor MQ-2 POLOLU-1480 Pololu Australia - Express Delivery Australia Wide (Feature image)

Flammable Gas & Smoke Sensor MQ-2 POLOLU-1480 Pololu Australia - Express Delivery Australia Wide (Image 1)

Flammable Gas & Smoke Sensor MQ-2 POLOLU-1480 Pololu Australia - Express Delivery Australia Wide (Image 2)

Flammable Gas & Smoke Sensor MQ-2 POLOLU-1480 Pololu Australia - Express Delivery Australia Wide (Image 3)

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Flammable Gas & Smoke Sensor MQ-2

5.52 AUD

SKU: POLOLU-1480

$5.52 AUD, inc GST

$5.02 AUD, exc GST

In stock, ships same business day if ordered before 2PM
Delivered by Mon, 23rd of Jul

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Brand: Pololu Australia

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$6.95 Standard (2-4 days, tracked)
$8.95 Express (Overnight*, tracked)
$3 Economy Post* (3-7 days, no tracking)
FREE Pickup (Newcastle only)

Shipping costs may increase for heavy products or large orders.

Exact shipping can be calculated on the view cart page.

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Overview

This flammable gas and smoke sensor detects the concentrations of combustible gas in the air and ouputs its reading as an analog voltage. The sensor can measure concentrations of flammable gas of 300 to 10,000 ppm.The sensor can operate at temperatures from -20 to 50°C and consumes less than 150 mA at 5 V. Please read the MQ2 datasheet (184k pdf) for more information about the sensor.

Gas sensor with metal case bottom view.

Connections

Connecting five volts across the heating (H) pins keeps the sensor hot enough to function correctly. Connecting five volts at either the A or B pins causes the sensor to emit an analog voltage on the other pins. A resistive load between the output pins and ground sets the sensitivity of the detector. Please note that the picture in the datasheet for the top configuration is wrong. Both configurations have the same pinout consistent with the bottom configuration.The resistive load should be calibrated for your particular application using the equations in the datasheet, but a good starting value for the resistor is 20 kΩ.

Pololu offer two breakout boards that make it easier to interface with these sensors: a Pololu carrier board and a SparkFun carrier board. The Pololu version is shown below.

Pololu MQ gas sensor carrier with sensitivity-setting resistor soldered in the vertical orientation.

This product is listed in:

Sensors

Gas & Smoke

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Exact shipping can be calculated on the view cart page (no login required).

We deliver Australia-wide with these options:

$3 for Small Items (3-7 days, not tracked, only available on selected small items)
$6.95 for Standard Post (2-4 days, tracked)
$8.95 for Express Post (Overnight for Australia Post Next Day Network, tracked)
Pickup - Free! Only available to customers who live in the Newcastle region (only after we email you to notify your order is ready)

International Orders - the following rates are for New Zealand and will vary for other countries:

$11.49 for Pack and Track (3+ days, tracked)
$16.50 for Express International (2-5 days, tracked)

If you order lots of gear, the postage amount might increment based on the weight of your order.

Our physical address (here's a PDF which includes other key business details):

Unit 18, 132 Garden Grove Parade
Adamstown
NSW, 2289
Australia

Take a look at our customer service page if you have other questions such as "do we do purchase orders" (yes!) or "are prices GST inclusive" (yes they are!). We're here to help - get in touch with us to talk shop.