3-in-1 CO2 Carbon Dioxide Detector Portable Air Quality Monitor Temperature Humidity Tester TVOC Detection Meter with LCD Display for Home Office CarFeatures:Multifunctional air quality detector, real-time monitoring of carbon dioxide concentration, temperature and relative humidity in the air.LCD screen with large digital display, clear and easy to read. Intelligent backlight, soft and eye protection.The colorful ring on the screen will change according to CO2 concentration, you can easily know the CO2 level in time.Using infrared sensor, plus high-performance chip, detection is more accurate, higher precision, and the accuracy can reach 1PPM.Equipped with 1500mAh high-capacity rechargeable battery(Repalceable with larger capacity batteries of the same model), environmental protection, long battery life, no need to replace the battery frequently.With multiple ventilation holes, which accelerate the convection beyween the air and the detector, to achieve effective detection and provide a nice heat dissipation effect.Lightweight and portable, it is suitable for home, office, school, warehouse, agricultural planting, etc. No need to calibrate at startup, automatic monitoring.Specifications:Color: Black/ White(optional)Material: ABS + PCCO2 Detection Range: 400-6000PPM, 505%PPMCO2 Detection Sensitivity: 1PPMTVOC Detection Range: 0-2.0mg/mTemp. Measurement Range: -10-50Temp. Measurement Accuracy: 1Humidity Measurement Range: 0-99%RHHumidity Measurement Accuracy: 2%RHCharging Mode: 5V, 1ABattery: 1 * 18650 Battery, 3.7V/1500mAhItem Size: 89 * 70 * 35cm/ 3.5 * 2.8 * 1.4inItem Weight: 142g/ 5.0oz(Battery Included)Package Size: 141 * 98 * 48cm/ 5.6 * 3.9 * 1.9inPackage Weight: 210g/ 7.4ozzgePacking List:1 * CO2 Detector1 * USB Cable1 * Users Manual