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Dahua HY-GA40A Natural Gas Alarm

Product "Dahua HY-GA40A Natural Gas Alarm"

Dahua Wisualarm HY-GA40A is a standalone natural-gas (methane, CH4) leak detector for home and light-commercial use. Its catalytic gas sensor continuously monitors the air and triggers an alarm already at 10% of the Lower Explosive Limit (LEL).

Key Advantages and Features:

  • Natural-gas (methane) detection: Catalytic sensor, alarm at 10% LEL
  • Loud built-in siren: Integrated buzzer ~70 dB(A) at 1 m
  • Two control outputs: For an external fan and a gas shut-off valve
  • Three status LEDs: Clear visual indication of device state
  • Fast response: High sensitivity and stable operation, few false alarms
  • Easy wall mounting: Compact housing for indoor installation

Technical Specifications:

ParameterSpecification
Detected gasNatural gas / methane (CH4)
Sensor typeCatalytic gas sensor
Alarm threshold10% LEL
Sound level~70 dB(A) at 1 m
Outputs2 (external fan + gas shut-off valve)
Status indication3 indicator LEDs
Power supply12 V DC
HousingPC/ABS, white
InstallationIndoor, wall-mounted
Dimensions86.5 × 86.5 × 29.4 mm

Best suited for: kitchens, boiler rooms and small businesses using natural gas that need reliable early leak warning with fan and shut-off-valve control.

Properties "Dahua HY-GA40A Natural Gas Alarm"
Alarm device type: Sensor
System: Standalone
Datasheets
Datasheet (PDF)

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Manufacturer "Wisualarm"

Wisualarm is Dahua's alarm systems brand.

We stock standalone detectors — a smoke detector and a gas leak detector — that also work on their own, without a control panel.

Related links of the manufacturer

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