GAIN EXPRESS CO2 Meter Handheld Monitor 9999ppm Measuring Range Carbon Dioxide Detector NDIR Sensor Air Quality Temperature Humidity

【HIGH ACCURACY】CO2 Accuracy: 0~2000ppm(±50ppm or ±5% of the reading); 2000~9999ppm(±10% of the reading) 【LARGE MEASURING RANGE】CO2: 0~9999ppm ; Temperature: -10~60°C(Accuracy ±0.6°C) ; Humidity: 0.1% ~ 99.9%RH(Accuracy ±3%RH) ; Dew Point: -20.0~59.9°C ; Wet Bulb: -5.0~59.9°C 【USER-FRIENDLY】Portable Handle Design, Easily manual calibration on CO2 and humidity, Stable NDIR CO2 sensor 【 POWER SUPPLY】Dual power source: battery (included) or 9V adaptor (**NOTED: adaptor is not included in set). Power from battery is automatically cut off when 9V adaptor is in use 【APPLICATION】IAQ monitoring and survey, especially on CO2 level and air ventilation become widely applied in public areas such as offices, classrooms, factories, hospitals, and hotels., Weight: 0.440924524 Pounds, Manufacturer: Gain Express Holdings Ltd.