[Comprehensive Air Quality Monitoring] Comprehensive Air Quality Monitoring: Our 5-in-1 air quality monitor can accurately measure the levels of PM2.5/1.0/10, HCHO, TVOC, Temperature, and Tumidity, providing vital information to your home has a healthy environment. [Convenient & Portable Design] Equipped with a rechargeable 1400Ah lithium-ion battery, this monitor is both convenient to use and portable. The large LED display screen is easy to read and displays accurate real-time data. [Versatile & Wide Application] Suitable for use in diverse settings including homes, offices, hotels, and rentals, this air quality monitor is designed to detect harmful gases such as Formaldehyde and TVOC, providing you with peace of mind in any environment. [User-Friendly Calibration] Calibration of this detector is a breeze. Simply and hold the calibration button for 3 seconds and wait for 5-8 minutes for data to appear. For optimal results, calibration should be done in a well-ventilated area, away from strong odors such as alcohol or perfume. [Intelligent Alarm & Customizable Features] Our air quality monitor features intelligent alarms that inform you of any risks. You can also adjust the screen brightness and switch the temperature unit with ease using the switch button. Stay in control of your environment with this advanced multifunctional air quality monitor.<br><br>Colour:White Material:ABS<br><br>Package Contents: 1 * Air Quality Tester 1 * usb cable 1 * English manual<br><br>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.