| 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 |
