[Comprehensive Air Quality Test]: This 15in1 air quality tester integrates multiple test functions for measuring , CO, CO2, PM0.3, PM1.0, PM2.5, PM10, formaldehyde, TVOC, temperature, humidity, as well as time display, alarm, and countdown functions, providing a complete solution for your air quality needs.[TFT Color Display & APP Control]: 2.8inch TFT color screen, you can see the test data clearly at a glance. With the Tuya APP, enjoy realtime testing and remote management of your home's air quality from anywhere you are.[Personalized Settings & Historical Data Checking]: Supporting customizes alarm limits, sets sleep modes, and effortlessly explores detailed historical data on air parameters by day, month, or year. The app also boasts a userfriendly interface with options for temperature unit switching and versatile settings, ensuring a personalized and convenient experience tailored to your needs.Name:Air Quality TesterCO2 Carbon dioxide detection range: 4005000PPM, +50 +5%PPMCO2 Carbon dioxide detection sensitivity 1PPMCO Carbon monoxide detection range: 0999PPM, +10PPMCO Carbon monoxide detection sensitivity 1PPMTVOC Total organic volatiles detection range: 09.99mg/m3, +0.05mg/m3HCHO Formaldehyde detection range: 01.99mg/m3, +0.05mg/m3PM2.5 detection range: 0999ug/m3, +10ug/m3PM2.5 detection sensitivity: 1ug/m3PM1.0 detection range: 0999ug/m3, +10ug/m3PM10 detection range: 0999g/m3, +10ug/m3PM0.3 detection range: 0999ug/m3,+10ug/m3Temperature measurement range: 1050Temperature measurement error: 2Humidity measurement range: 0% 99% RHCharging and interface: DC5V/1A TYPEC USB interfaceBattery: 2000mAhWorking current: 260mAWorking voltage: 3.7VColour:WhiteMaterial:ABSPackage Contents:1 * Tuya WIFI Air Quality DetectorOnly 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 +/ 13cm.