Description Description Description Features:3 in 1 air quality monitor, accurately detect the level of CO2, Temperature and Humidity.Adopted high precision infrared sensor and high-performance chip, providing fast and reliable detection.Easy to check the real-time data on the colorful LED display with large digits, fast capturing the results.4 flashing indicator levels demonstrate different CO2 concentration, the alarm will be given out when value exceeding 1000PPM.Built-in 2000mAh large capacity lithium battery, get rid of cable annoyance, flexible to use and charge.Palm size with lightweight, perfect for home, school, office, hotel, warehouse and other environments.Specifications:Material: ABSColor: BlackVoltage: DC5VScreen: Color LED DisplayCO2 Detection Method: Infrared (NDIR)CO2 Detector Range: 400-5000PPMReal Time Reading: 1SAlarm Sound: 1000PPMCO2 Indicator:0-999PPM: Green Light Flash1000-1999PPM: Yellow Light Flash2000-2999PPM: Orange Light Flash3000-3999PPM: Red Light FlashAbove 4000PPM: 4 Lights FlashBattery: 1 * 3.7V Lithium BatteryItem Size: 137 * 80 * 35mm / 5.4 * 3.1 * 1.4inItem Weight: 165g / 5.8ozPackage List:1 * Carbon Dioxide Detector1 * USB Cable1 * Manual