[Comprehensive Air Quality Test]: This 15-in-1 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]: 2.8-inch TFT color screen, you can see the test data clearly at a glance. With the Tuya APP, enjoy real-time 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 user-friendly interface with options for temperature unit switching and versatile settings, ensuring a personalized and convenient experience tailored to your needs. Name:Air Quality Tester CO2 Carbon dioxide detection range: 400-5000PPM, +50 +5%PPM CO2 Carbon dioxide detection sensitivity 1PPM CO Carbon monoxide detection range: 0-999PPM, +10PPM CO Carbon monoxide detection sensitivity 1PPM TVOC Total organic volatiles detection range: 0-9.99mg/m3, +0.05mg/m3 HCHO Formaldehyde detection range: 0-1.99mg/m3, +0.05mg/m3 PM2.5 detection range: 0-999ug/m3, +10ug/m3 PM2.5 detection sensitivity: 1ug/m3 PM1.0 detection range: 0-999ug/m3, +10ug/m3 PM10 detection range: 0-999g/m3, +10ug/m3 PM0.3 detection range: 0-999ug/m3,+10ug/m3 Temperature measurement range: -10-50 Temperature measurement error: 2 Humidity measurement range: 0% -99% RH Charging and interface: DC5V/1A TYPE-C USB interface Battery: 2000mAh Working current: 260mA Working voltage: 3.7V Colour:White Material:ABS Package Contents: 1 * Tuya WIFI Air Quality Detector 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.