Waveshare MQ-3 Gas Sensor, MQ-3

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Waveshare MQ-3 Gas Sensor, MQ-3

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£3.99 Incl. VAT

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    • Shipped today? Order within: Oct 12, 2026 23:59:00 +0100
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    Description

    Overview
    1. Sensitive for alcohol, ethanol
    2. Output voltage boosts along with the concentration of the measured gases increases
    3. Fast response and recovery
    4. Adjustable sensitivity
    5. Signal output indicator

    Specifications
    1. Power: 2.5V ~ 5.0V
    2. Dimension: 40.0mm * 21.0mm
    3. Mounting holes size: 2.0mm

    Applications
    1. Car alcohol alarm
    2. Breathalyser

    How to Use
    In the case of working with a MCU:
    1. VCC: 2.5V ~ 5.0V
    2. GND: Power supply ground
    3. AOUT: MCU.IO (analog output)
    4. DOUT: MCU.IO (digital output)

    Package Contents
    1. MQ-3 Gas Sensor x1
    2. 4-pin custom connector jumper wire x1


    Specification:
    Package Weight
    One Package Weight 0.06kgs / 0.13lb
    One Package Size 5cm * 4cm * 1cm / 1.97inch * 1.57inch * 0.39inch
    Qty per Carton 4800
    Carton Weight 288.00kgs / 634.92lb
    Carton Size 60cm * 40cm * 40cm / 23.62inch * 15.75inch * 15.75inch
    Loading Container 20GP: 277 cartons * 4800 pcs = 1329600 pcs
    40HQ: 644 cartons * 4800 pcs = 3091200 pcs

    Pros and cons

    • Sustainably produced
    • Ideal for everyday use
    • May discolor in direct sunlight

    Returns & Delivery

    When will my order be delivered?

    We ship worldwide. Your order will be packaged really carefully and delivered wherever you want. Delivery takes between 4-6 business days. You will receive an e-mail after ordering with more information about the delivery.

    Can I return my product?

    Orders can be returned or exchanged within 30 days of receiving the parcel, providing they are in original resalable condition.

    What can I do if my item (or part of it) is damaged?

    We work hard to deliver your items without damage. Orders can be returned or exchanged within 30 days of receiving the parcel, providing they are in original resalable condition.

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