【Multifunctional Air Quality Monitor】This air quality monitor indoor accurately assesses temperature in Celsius, humidity level, and multiple measures of air quality including concentrations of formaldehyde, total natural & synthetic volatile organic compounds causing most odors (TVOC), and fine particulate dust matter (PM2.5/PM1.0/PM10) which travel deeply into the respiratory tract, reaching the lung alveoli. 【Portable Air Quality Monitor】It's necessary to know the air quality of the place where you live.Spot check indoor air quality anywhere or leave device on for continuous monitoring. This easy-to-carry air quality tester can help monitor air quality at home, in the car, and in hotel rooms. The lithium battery provides portable power.Information is displayed on a clear 3.3” LD color Screen display. 【Indoor Air Quality Monitor with Advanced Sensors】 This air quality monitor has a total of 6 gas sampling ports, which can quickly draw in ambient air to allow REAL-TIME measurements. It incorporates a laser sensor to measure levels of dust particles and has a second electrochemical semiconductor sensor to test air quality including formaldehyde and natural/synthetic organic compound levels. 【Easy to Use Air Detector】 This air monitor is easy to operate and comes with detailed instructions. With just the press of a button, you can easily read all real-time readings simultaneously. The size of the home air test kit is 2.76*6.22*1.18".Carrying an intelligent air quality monitor is easy and can help us monitor the air quality in homes, kitchens,bedrooms,offices,schools,cars,hotels,travel,camping,gatherings,especially those with infants,children,and pregnant women. 【PM2.5 PM10/Monitor-Bring You a Healthy Home】 This indoor air quality monitor can help us detect air quality in time, especially when you move to a new home or renovate your home. This CO2 monitor can also help you understand when your asthma is likely to get worse and when to replace the air filter in your home. Tip: When the device is used for the first time, please take the device to a place with fresh air and open the device for 3 minutes to recalibrate the instrument.