Description Feature 5 in 1: The large screen displays the power, CO2 value, TVOC value, HCHO value, temperature and humidity. 1.CO2 Detection-Range: 100-6000 PPM, +50 +5%PPM 2.CO2 Detection Sensitivity: 1PPM 3.TVOC Detection-Range: 0-2.0 mg/m3; 4.HCHO Detection-Range: 0-0.6 ma/m3; 5.Temp Measurement-Range: -10 to 50 6.Temp Measurement Accuracy: 1 7.Humidity Measurement-Range: 0%-99%RH 8.Humidity Measurement Accuracy: 2%RH Packing List 1 * Air Quality Detector 1 * Cable 1 * User Manual Features: 1.Intelligent CO2 tester uses air semiconductor-sensor, high accuracy, stable performance, Strong anti-interference ability, low consumption and long service life. 2.The new machine needs to be ventilated for 24 hours to ensures accurately measurement,and the product will work normally. About Shipment 1.If you choose to ship from China, we ship by the Standard Shipping; if you choose to ship from overseas warehouses, we will ship by the local logistics delivery. 2.Your order is generally shipped within 24h, please kindly be more patient to wait. 3.Anything please feel free to let me know,we will solve it for you as soon as poible.