0.001 High Accuracy - This air quality monitor uses the latest high quality sensors to accurately test the data of HCHO and TVOC data (0.001 accuracy), this professional air quality meter helps to quickly and accurately detect the data in your home of harmful gases.Real-time display - HCHO measuring range 0.000 - 2.888 mg/m, TVOC measuring range 0.000 - 9.999 mg/m, the LCD display displays the test data in real time, you can understand the surrounding air quality and create a healthier .ENERGY SAVING DESIGN - Air Quality Monitor is powered by 2 AAA batteries, the energy saving design allows test time and standby time, the LCD display allows you to see clearly even in the dark and is easy to use.Versatile - handheld size 120 x 55 x 22 mm, lightweight and easy to hold, you can put the air quality monitor in your pocket or backpack and carry it with you, widely used in homes, , hotels, apartments, offices, Outdoor and indoor.color:WhiteMaterial:plasticPackage Contents:1 x air quality testerOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.