Fire certification model (recommended by the manager) natural gas liquefied gas Fire certification deluxe model (sharp voice) natural gas liquefied gas Fire certification voice model (10 million insurance) natural gas liquefied gas Composite voice model (10 million insurance) (gas leakage + carbon monoxide) 2-in-1 Internet of Things model (telephone SMS alarm) natural gas liquefied gas economy (million insurance) natural gas (automatic out of gas) natural gas pipeline) fire protection model + universal straight-through valve (automatic out of gas) natural gas pipeline) high-end model + universal straight-through valve (automatic out of gas) Gas tank) Fire type + single pointed valve (automatic gas out) gas tank) high-end model + single pointed valve (out of gas alarm controller) high-end fire type (with gas out of solenoid valve)
Detectable gases:
Methane (CH4) Carbon monoxide (CO)
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