| Photo | Model No. | For use | Type | Taget gase | Detection Range | Features |
 | NAP-52A | Residential | Catalytic | methane, | methane(0.05-0.25%), iso-butane(0.03-1.0%) | Small sized, Lower power consumption, Low sensitivity to ethanol, Good linearity against gas concentration |
 | NAP-57A | Residential | Catalytic | methane, | methane(0.05-0.25%), Ethane(0.05-1.5%) | metal casing, Wide-spectrum combustible gas detection, Good linearity against gas concentration |
 | NAP-55A | Residential | Catalytic | methane, | methane(0.05-0.25%), iso-butane(0.03-1.0%) | Small sized, Lower power consumption, Low sensitivity to ethanol, Wide-spectrum combustible gas detection, |
 | NAP-56A | Residential | Catalytic | methane, | methane(0.05-0.25%), Ethane(0.05-1.5%) | Metal casing, Gas Detection sensitivity is high |
 | NAP-50A | Residential | Catalytic | methane, | methane(0.05-0.25%), iso-butane(0.03-1.0%) | Small sized, Lower power consumption, Low sensitivity to ethanol, |
 | NAP-66A | Residential | Catalytic | hydroge, | hydroge(0.04-2%), iso-butane(0.02-1%) | Small sized, Lower power consumption, Low sensitivity to ethanol, Detection LPG |
 | NAP-505 | Residential | Electrochemical | CO | 10 - 1,000 ppm | High accuracy, Long lifetime |
 | NAP-508 | Residential | Electrochemical | CO | 10 - 1,000 ppm | Long lifetime(10 years) |
 | NAP-550 | Residential | Electrochemical | NO2 | 0 - 30 ppm | High accuracy |
 | NAP-523 | Residential | Electrochemical | NO2 | 0 - 30 ppm | High accuracy |