Photo Model No. for use Type Taget gases Detection Range Features
NAP-78S Residential Catalytic hydrogen,carbon monoxide [1/2 H2 + CO](0.03-2%) For gas water heater, oil water heater, boiler
NSU-131A Residential Catalytic methane,iso-butane,hydrogen 5 - 25%LEL For hydrogen fuel cell
NSU-131AF Residential Catalytic methane,hydrogen 5 - 25%LEL For hydrogen fuel cell