HCHO TVOC CO CO2 Air Quality Analyzer As we all know, air is an important part of our lives. Air quality affects our body and mind, but the air is colorless and tasteless, and we cannot measure it with our eyes. Currently, we need air testers to monitor air quality. Function: The large display makes it easy to read data and the buttons are easy to use. Easy to carry, suitable for home, car, office, factory and other environment. Detectable substances: CO, CO2, HCHO, TVOC, AQI. 24/7 real-time monitoring can protect your healthy life and that of your family. With the battery status display, it is more convenient to use. HCHO TVOC YY002667 series CO CO2 air quality analyzer Technical data: Material: ABS White Detectable substances: CO, CO2, HCHO, TVOC, AQI Application technology: natural airflow detection technology Display mode: LED digital display Floating error: 3% -30% Warm-up time: 120 seconds Operating voltage: 5V Battery: 1 * lithium battery, 1000mAh (included) Charging time: about 4 hours Standby time: about 180 to 240 minutes Product size: 125 * 80 * 35mm / 4.9 * 3.1 * 1.4inch Product weight: 172 g / 6.1 oz Packing size: 168 * 108 * 40mm / 6.6 * 4.3 * 1.6in Package weight: 310 grams / 10.9 ounces Packing list: 1 * Air quality detector 1 * USB cable 1 * User manual