Setup A Dynamic Air Monitoring System Various Modules to Choose Both slots can insert different modules for expanded measurements or as batteries for longer operational life, without replacing the base hardware. CO Sensor Range 0-1000ppm Accuracy ±5ppm or ±10% Resolution 5ppm Sensor Type Micro Fuel cell NO2 Sensor Range 0-5ppm Accuracy ± 5% F.S Resolution 0.001ppm Sensor Type Solid polymer Electrochemical Sensing technology TVOC Sensor Range 0-500 Accuracy ≤ ± 15 Resolution 1 Sensor Type MOx PM2.5 Sensor Range 0-1,000 μg/m³ Accuracy 0-100μg (±10μg/m3 ), 100-1000μg (±10%) Resolution 1 μg/m3 Sensor Type Light Scattering NO2 & CO Sensor Range 0-1000ppm(CO), 0-5ppm(NO2) Accuracy ±15ppm or ±10%(CO), ±5% F.S(NO2) Resolution 1ppm(CO), 0.001ppm(NO2) Sensor Type Micro Fuel cell(CO), Solid Polymer Electrochemical (NO2) Ozone Sensor Range 0-5ppm Accuracy ± 5% F.S Resolution 0.001ppm Sensor Type Solid polymer Electrochemical Sensing technology HCHO Sensor Range 0-1ppm Accuracy ± 5% F.S Resolution 0.001ppm Sensor Type Solid Polymer Electrochemical NH3 Sensor Range 1ppb Accuracy ± 5% F.S Resolution 0.01ppm Sensor Type solid polymer electrochemical sensing technology H2 Sensor Range 0-5 % vol. Accuracy ± 5% F.S Resolution 0.01ppm Sensor Type Solid polymer Electrochemical Sensing technology H2S Sensor Range 0-5ppm Accuracy ± 5% F.S Resolution 1ppb Sensor Type Solid polymer Electrochemical Sensing technology SO2 Sensor Range 0-5ppm Accuracy ± 5% F.S Resolution 1ppb Sensor Type Solid polymer Electrochemical Sensing technology Battery Battery Type AA Battery Numbers Three Volume 2700maH