Gas parameters: Oxygen: 0-21% Oxygen resolution / accuracy: 0.1% / 0.3% CO:0~2000 ppm (4000 max 15 min) * The resolution of the CO / accuracy: 1ppm / 10ppm < 100ppm ± 5% RDG > 100ppm CO2:0-20% The resolution of the CO2 / accuracy: 0.1%/ ± 2% Efficiency: 0~99.9% Efficiency / accuracy resolution: 0.1%/ ± 3% The loss rate: 0~250% The loss rate of resolution / accuracy: 0.1%/ ± 3% The ratio of CO/CO2: 0~0.999 The resolution of the CO/CO2 / accuracy: 0.001/ ± 5% RDG NO:0~100 ppm The resolution of the NO / accuracy of ± 5 ppm<100 ppm The pressure (differential pressure): Scope: ± 0.08 "WC (± 0.2mBar) ± 0.4 "WC (± 1mBar) ± 32" WC (+ 80mBar) Precision: ± 0.002 "WC (± 0.005mBar) ± 0.01 "WC (± 0.03mBar) ± 3% RDG Pressure resolution: The 0.001 "WC" 9.999 "WG The 0.01 "WC" 10 "WG 0.001 mBar < 24.999 mBar 0.01 mBar > 25 mBar Configuration: 1050X-NO flue gas analyzer probe, IR printer, K- temperature probe (2), (2) static high-pressure hose, (1) True Draft Probe, Gas Tap and Hose, AC adapter / charger, hard portable box, printing paper (2), (2) the particle filter, the battery, the quick start guide, user manual