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Whether it's detecting flammable gas, alcohol, or just small particles such as dust or smoke, our gas & smoke sensors are easy to get started with.

We've got pre-soldered modules, or sensors by themselves with a breakout board for easy integration with your project.

  1. Pololu Carrier for MQ Gas Sensors (Bare PCB Only) POLOLU-1479 Pololu Australia - Express Delivery Australia Wide

    Pololu Carrier for MQ Gas Sensors (Bare PCB Only)

    SKU: POLOLU-1479
    This carrier board is designed to work with any of the MQ-series gas sensors, simplifying the interface from 6 to 3 pins—ground, power and analog voltage output—that are broken out with a 0.1" spacing, making the board compatible with 0.1" headers and standard breadboards and perfboards. This board has two mounting holes and provides convenient pads for mounting the gas sensor’s required sensitivity-setting resistor. Learn More
    $1.66 AUD, inc GST
    AUD, inc GST
    delivered by
    Tue 21st of Nov

    $1.66 AUD

  2. Flammable Gas & Smoke Sensor MQ-2 POLOLU-1480 Pololu Australia - Express Delivery Australia Wide

    Flammable Gas & Smoke Sensor MQ-2

    SKU: POLOLU-1480
    This semiconductor gas sensor detects the presence of combustible gas and smoke at concentrations from 300 to 10,000 ppm. The sensor’s simple analog voltage interface requires only one analog input pin from your microcontroller. Learn More
    $5.52 AUD, inc GST
    AUD, inc GST
    delivered by
    Tue 28th of Nov

    $5.52 AUD

  3. Alcohol Gas Sensor MQ-3 POLOLU-1634 Pololu Australia - Express Delivery Australia Wide

    Alcohol Gas Sensor MQ-3

    SKU: POLOLU-1634
    This semiconductor gas sensor detects the presence of alcohol gas at concentrations from 0.04 mg/L to 4 mg/L, a range suitable for making a breathalyser. The sensor’s simple analog voltage interface requires only one analog input pin from your microcontroller. Learn More
    $6.76 AUD, inc GST
    AUD, inc GST
    delivered by
    Tue 28th of Nov

    $6.76 AUD

  4. Methane Gas Sensor MQ-4 POLOLU-1633 Pololu Australia - Express Delivery Australia Wide

    Methane Gas Sensor MQ-4

    SKU: POLOLU-1633
    This semiconductor gas sensor detects the presence of methane (CNG) gas at concentrations from 300 ppm to 10,000 ppm, a range suitable for detecting gas leaks. The sensor’s simple analog voltage interface requires only one analog input pin from your microcontroller. Learn More
    $7.46 AUD, inc GST
    AUD, inc GST
    delivered by
    Tue 28th of Nov

    $7.46 AUD

  5. LPG / Isobutane / Propane Gas Sensor MQ-6 POLOLU-1481 Pololu Australia - Express Delivery Australia Wide

    LPG / Isobutane / Propane Gas Sensor MQ-6

    SKU: POLOLU-1481
    This semiconductor gas sensor detects the presence of LPG, isobutane, and propane at concentrations from 300 to 10,000 ppm. The sensor’s simple analog voltage interface requires only one analog input pin from your microcontroller. Learn More
    $7.46 AUD, inc GST
    AUD, inc GST
    delivered by
    Tue 28th of Nov

    $7.46 AUD

  6. Carbon Monoxide Gas Sensor MQ-7 POLOLU-1482 Pololu Australia - Express Delivery Australia Wide

    Carbon Monoxide Gas Sensor MQ-7

    SKU: POLOLU-1482
    This semiconductor gas sensor detects the presence of Carbon Monoxide at concentrations from 10 to 10,000 ppm. The sensor’s simple analog voltage interface requires only one analog input pin from your microcontroller. Learn More
    $10.48 AUD, inc GST
    AUD, inc GST
    delivered by
    Tue 28th of Nov

    $10.48 AUD

  7. Hydrogen Gas Sensor - MQ-8 SEN-10916 Sparkfun Australia - Express Delivery Australia Wide

    Hydrogen Gas Sensor - MQ-8

    SKU: SEN-10916
    This is a simple-to-use hydrogen gas sensor, suitable for sensing hydrogen concentrations in the air. The MQ-8 can detect hydrogen gas concentrations anywhere from 100-10000ppm. Learn More
    $12.38 AUD, inc GST
    AUD, inc GST
    $12.38 AUD
  8. Carbon Monoxide & Flammable Gas Sensor MQ-9 POLOLU-1483 Pololu Australia - Express Delivery Australia Wide

    Carbon Monoxide & Flammable Gas Sensor MQ-9

    SKU: POLOLU-1483
    This semiconductor gas sensor detects the presence of Carbon Monoxide at concentrations from 10 to 1,000 ppm and combustible gas from 100 to 10,000 ppm. The sensor’s simple analog voltage interface requires only one analog input pin from your microcontroller. Learn More
    $10.48 AUD, inc GST
    AUD, inc GST
    delivered by
    Tue 21st of Nov

    $10.48 AUD

  9. Optical Dust Sensor - GP2Y1010AU0F COM-09689 Sparkfun Australia - Express Delivery Australia Wide

    Optical Dust Sensor - GP2Y1010AU0F

    SKU: COM-09689
    Sharp’s GP2Y1010AU0F is an optical air quality sensor, designed to sense dust particles. An infrared emitting diode and a phototransistor are diagonally arranged into this device, to allow it to detect the reflected light of dust in air. It is especially effective in detecting very fine particles like cigarette smoke, and is commonly used in air purifier systems. Learn More
    $20.27 AUD, inc GST
    AUD, inc GST
    delivered by
    Tue 21st of Nov

    $20.27 AUD

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