TFT Display: screen allows you to browse the data more clearly, makes it more convenient for elderly and children, giving you a better experience. Portable Size: The small size of this tool is convenient for everyday use, you can put it on a desktop without taking up too much space. 7 In 1 Detecting: It will display the detecting PM2.5, CO2, TVOC, HCHO, TEMP, HUMI. Wide Applications: This detector is suitable for indoor air quality detecting, and can be widely used in your home, living room, bedroom, office and other . Easy To Operate: One button open design allows you to use this tool . The WiFi version supports to connect with the mobilephone and achieve Tuya APP remotes viewing, timing, intelligent linkage function. The detector can detect the following gases: PM2.5, , second-hand smoke, smoke, small dust particles, TVOC, odor , methane, sulfide , benzene odor, alcohol, volatile irritant , formaldehyde, benzene C odor, , etc. NOTE: The smart carbon dioxide value tester analyzer uses a semiconductor TVOC sensor to convert the carbon dioxide concentration, with stable performance, low consumption and long service life. Accurate detection of carbon dioxide. The disadvantage is that the semiconductor sensor is to gases, especially active gases such as alcohol, formaldehyde, vinegar, and , and is affected by this, causing changes in readings. Type: Air Quality Meter color:Black Material:ABS Package Contents: 1 x Air Quality Detector 1 x Charging cable Only the above package content, other products are not included. Note: Light reflection 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.