Photo Model No. for use Type Taget gases Detection Range Features
NAP-56A Residential Catalytic methane,ethane,hydrogen methane(0.05-2.5%), Ethane(0.05-1.5%) Small sized, Lower power consumption
NAP-50A Residential Catalytic methane,iso-butane,hydrogen methane(0.05-2.5%),iso-butane(0.03-1.0%) Low sensitivity to ethanol
NAP-50AF Residential Catalytic methane,iso-butane,hydrogen methane(0.05-2.5%),hydrogen(0.05-2.5%) With charcoal filter