Side-by-side comparison · Updated for 2026

Gas Detectors with Automatic Shut-off Valve

Looking for a gas detector that closes the gas supply automatically? Compare features, specs, and top-rated models to find the best one for your smart home in 2026.

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  • Shelly GAS (CNG)
    Best Seller
    Shelly

    GAS (CNG)

    BUY NOWCheck price
    • 4.2
    • 45
    • 2020
    • 2 years
    • Shelly Gas CNG
    • Shelly
    • Bulgaria
    • 3.5 × 3.5 × 1.5 in (89.5 × 89.5 × 38 mm)
    • ?
    • YES
    • -
    • -
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • YES
    • NO
    • YES
    • YES
    • NO
    • YES
    • NO
    • NO
    • ?
    • 6% LEL
    • YES
    • ?
    • YES
    • 70 dB
    • NO
    • -
    • YES
    • YES
    • NO
    • YES
    • YES
    • NO
    • ?
    • YES
    • ?
  • Aqara Smart Gas Detector
    Best Seller
    Aqara

    Smart Gas Detector

    BUY NOWCheck price
    • -
    • -
    • 2022
    • 2 years
    • JT-BZ-03AQ/A
    • Aqara
    • China
    • Ø3.2 × 1.2 in (Ø80.4 × 31 mm)
    • ?
    • YES
    • -
    • -
    • NO
    • NO
    • NO
    • NO
    • NO
    • Zigbee Hub required
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • YES
    • NO
    • YES
    • NO
    • NO
    • ?
    • ?
    • YES
    • ?
    • YES
    • 85 dB
    • NO
    • -
    • YES
    • YES
    • NO
    • YES
    • YES
    • YES
    • ?
    • YES
    • YES
  • Heiman WS2CG Series Combustible Gas Detector
    Heiman

    WS2CG Series Combustible Gas Detector

    BUY NOWCheck price
    • -
    • -
    • 2020
    • ?
    • WS2CG
    • Heiman
    • China
    • ?
    • ?
    • YES
    • -
    • -
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • NO
    • YES
    • YES
    • NO
    • Semiconductor
    • 6% LEL
    • ?
    • ?
    • YES
    • 70 dB
    • YES
    • -
    • YES
    • YES
    • NO
    • YES
    • ?
    • NO
    • ?
    • YES
    • ?
  • Shelly GAS (LPG)
    Shelly

    GAS (LPG)

    BUY NOWCheck price
    • -
    • -
    • 2020
    • 2 years
    • Shelly Gas LPG
    • Shelly
    • Bulgaria
    • 3.5 × 3.5 × 1.5 in (89.5 × 89.5 × 38 mm)
    • ?
    • YES
    • -
    • -
    • NO
    • YES
    • NO
    • NO
    • NO
    • NO
    • NO
    • NO
    • YES
    • YES
    • NO
    • YES
    • YES
    • NO
    • NO
    • YES
    • NO
    • ?
    • 6% LEL
    • YES
    • ?
    • YES
    • 70 dB
    • NO
    • -
    • YES
    • YES
    • NO
    • YES
    • YES
    • NO
    • ?
    • YES
    • ?

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