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.Warning & Visual Alert: After connecting to WiFi, users can set the alarm value according to their needs. Once the measured data exceeds the standard, the device immediately sends out three emergency beeping alarms, and the interface color changes with the air quality (green-nice, orange-warning, red-bad), intuitive warnings to immediate response.Intelligent Linkage Control: Use high-end infrared and laser sensors to measurement accuracy. It can link with the smartplug to control external devices. For example, you can set the exhaust fan to turn on when the CO2 concentration exceeds 1500ppm and turn off when it below 800ppm, saving electricity. Applicable to families, schools, hospitals, children's rooms, hotels, restaurants, cars, and other places.Name:Air Quality Tester Battery:2000mAh polymer lithium battery (included)Working voltage:3.7VWorking current:260mACO2 tion ranges:400-5000PPM, 50 5%PPMCO2 detection sensitivity:1PPMCO detection ranges:0-999PPM, 10PPMCO detection sensitivity:1PPMTVOC detection ranges:0-9.99mg/m, 0.05mg/mHCHO detection ranges:0-1.99mg/m, 0.05mg/mPM2.5 detection ranges:0-999g/m, 10g/mPM2.5 detection sensitivity:1g/mPM1.0 detection ranges:0-999g/m, 10g/mPM10 detection ranges:0-999g/m, 10g/mPM0.3 detection ranges:0-999g/m, 10g/mTemperature measurement ranges:-10-50Temperature measurement error:2Humidity measurement ranges:0%-99% RHHumidity measurement error:5%RHCharging:5VDC, 1A Type-C interfaceItem size:90x35x70mm/3.54x1.38x2.76inItem weight:165g/5.82ounceColour:BlackMaterial:PlasticPackage Contents:1 * Air Quality Tester1 * CableOnly 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.