Photo Model No. for use Type Taget gases Detection Range Features
NAP-78SU Residential Catalytic carbon monoxide,hydrogen CO 0 - 10,000 ppm 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