Item Type: CO2 DetectorMaterial: ABSCharging Voltage: 5VBattery Information: 1000mAh polymer lithium (built in)Charging Mode: T C chargingMeasuring Range: 400-5000ppmMeasuring Object: AirPreheating Time: 35sOperating Humidity: 0-95%Working Temperature: -10 to +50Accuracy: 5%Data Refreshing Rate: 2SMeasurement Item: Carbon dioxide, indoor temperature and humidityDetection Technology: NDIR infrared sensor .wang-edit-text{ font-family:'Arial' important; } .wang-edit-text table { border-top: 1px solid 000; border-left: 1px solid 000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000; border-right: 1px solid 000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 1Precise and Sensitive: Equipped with high precise sensor, real time detection of CO2 concentration in 0 seconds, more accurate. 2High Definition Screen: Adopt ultra high definition color screen, more intuitive and convenient for users to read. 3Security Alarm: If exceeds the standard, the meter will display yellow, emit didi sound to give a cycle alarm every 10 minutes. 4High Performance: The gauge is not easy to be poisoned and aged by harmful gases, with quick response, good stability and high signal to noise ratio. 5Scope of Application: The detector is suitable for factories, laboratories, families, offices, schools, hospitals, hotels, restaurants and other indoor places.