Description Multifunctional 4 in 1 Digital Air Quality Monitor Mini Portable Detector for TVOC HCHO PM2.5 PM10 Home Outdoor Tester Feature: 1.Upgrade the indoor air quality monitor with built-in DART electrochemical sensor, which can accurately detect formaldehyde (HCHO), volatile organic compounds (TVOC) and particulate matter (PM2.5/PM10). 2.This new model can provide real-time data and average value. It is suggested that you focus on the average value of each gas after testing, because the real-time data is unstable due to long-term monitoring. 3.Everyone needs to know the air quality of the place where you live. This air display has a LCD digital color screen, which is large and easy to read. 4.This air monitor is easy to operate, and only needs to press the function button. The whole page design makes it easy for everyone to read real-time readings, which is easy to carry. 5.It can help us to detect the air quality of home, kitchen, bedroom, office, school, car, hotel, travel, camping, party, etc. especially babies, children and pregnant women. 6.HLW-100 air quality detector is a multifunctional intelligent household air quality monitoring equipment, which is not a professional testing instrument. The measured data can only be used as a reference for the change of domestic air environment. Meet the test range standard, CE standard and ROHS standard Specification: Application technology: Air Natural Flow Model: HLW-100 Display mode: LCD Color screen digital display error fluctuation: 3%-30% Size: 120mmx72mmx4mm Operating voltage: 5V Start-up preheating: 120S (formaldehyde TVOC sensing only) Battery capacity: 2000mA Charging time: about 4h Standby time: about 240-360 minutes 4-in-1 air quality monitor: HCHO (formaldehyde) Tvoc (Volatile Organic Compounds) PM2.5 PM10 Instruction and tips: 1.Check whether the instrument is in good condition before use. 2.After starting up, the instrument can be tested and used only after the data is stable. 3.Formaldehyde TvoC detection needs 120 seconds of preheating and timing after startup, and PM2.5 PM10 detects data in real time. 4.The doors and windows of indoor testing need to be closed. The detection time of formaldehyde TVOC is about 60 minutes, and the small spaces such as cabinets and drawers are about 3-15 minutes. 5.Long-term monitoring, real-time data is unstable, please take the average value of monitoring data as the standard. 6.Do not place the detector in an environment with high dust and high concentration of polluted gas for a long time. 7.Pay attention to fire/water/dust/fall/sun/moisture/mildew to prevent violent shaking. 8.Children with electronic instruments or mental retardation should avoid touching it. 9.For long-term use, please keep it in a safe area and keep it away from inflammable and explosive materials.