| Photo | Model No. | For use | Type | Tager gaess | Detection Range | Features |
 | NCP-170 | Industria | Catalytic | General combustible gases | 0 - 100%LEL | 2.0V-170mA,matched pair type |
 | NCP-170S | Industrial | Catalytic | General combustible gases | 0 - 50%LEL | 2.0V-170mA,single header type |
 | NCP-300 | Industrial | Catalytic | General combustible gases | 0 - 100%LEL | 2.0V-170mA,matched pair type |
 | NCP-180 | Industrial | Catalytic | General combustible gases | 0 - 100%LEL | 2.6V-170mA, matched pair type |
 | NCP-180S | Industrial | Catalytic | General combustible gases | 0 - 50%LEL | 2.0V-170mA,single header type |
 | NE4-CO | Industrial | Electrochemical | CO | 0 - 1,000 ppm | Compatible with 4 series sensor of City Tech,Standard type |
 | NE4-H2S | Industrial | Electrochemical | H2S | 0 - 100 ppm | Standard type, 0-100ppm, 500nA/ppm |
 | NE4-NH3 | Industrial | Electrochemical | NH3 | 0 - 100 ppm | Standard type, 0-100ppm |
 | NE4-NO2 | Industrial | Electrochemical | NO2 | 0 - 20 ppm | Standard type, 0-20ppm |
 | NE4-NO | Industrial | Electrochemical | NO | 0 - 250 ppm | Standard type |
 | NE4-Cl2 | Industrial | Electrochemical | Cl2 | 0 - 1 ppm | Standard type |
 | NE4-HCHO | Industrial | Electrochemical | HCHO | 0 - 50 ppm | More than 0.5ppm |
 | NE7-CO-H | Industrial | Electrochemical | CO | 0-1000ppm | 7 series type, 0-1000ppm, H2 compensated |
 | NE7-CO-H10000 | Industrial | Electrochemical | CO | 0 - 1% | 7 series type, 0-10000ppm, H2 compensated |
 | NE7-H2S | Industrial | Electrochemical | H2S | 0-200ppm | Good repeatability， Wide Range |
| NE7-H2S-S | Industrial | Electrochemical | H2S,S | 0-10ppm | High accuracy， High Selectivity， Environmental monitoring applications |