1. Display: color TFT screen allows you to browse the data more clearly, makes it more convenient for elderly and children, giving you a better experience.2. Portable Size: The small size of this tool is very convenient for everyday use, you can put it on your desktop without taking up too much space.3. Tuya APP Remotes Viewing: After connect with your mobpilephone APP correctly, you can view the data on your mobilephone easily, wherever you are.4. Multiple Detection&Display: This aire quality detector will detecting the PM2.5, CO2, TVOC, HCHO, temperature and humidity for you. It also will show the , time, date and week for you.5. You can setting the 2 set of clock alarm according to your needs, and the calendar funtion should be achieved after connecting to the WiFi. Built-in capacity rechargable lithium battery to supplys , you can recharge it in time.DIY Supplies:Paint & DecoratingModel Number: Quality DetectorWith LCD Screen Or Not:YesIs Smart Device:YESGas Type:MultifunctionalPM2.5 measuring ranges: 0-9999ug/mPM2.5 resolution ratio: 1ug/mTVOC measuring ranges: 0-3mg/mTVOC resolution ratio: 0.001mg/mCO2 measuring ranges: 400-5000PPMHCHO measuring ranges: 0-3mg/mTemperature measuring ranges: 0-60Humidity measuring ranges: 0-99%RHBattery: 1 * lithium battery, 1200mAh (included)Item size: 90 x 70 x 45mm / 3.5 x 2.8 x 1.8inchItem weight: 132g / 4.7ouncecolor:BlackMaterial:plasticPackage Contents:1 x Quality MeterOnly the above package content, other products are not included.Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.