Come and try this new type of multifunctional quality detector. Compared with other quality detectors, this detector can show you 6 different detection results at the same time, and the detection function is more comprehensive. If you are looking for a new quality monitor, try it, it will not disappoint you. Features: 6-in-1 Quality Tester: Come and try this new type of multifunctional quality detector. Compared with other quality detectors, this detector can test PM2.5, PM10, HCHO, TVOC, CO and CO2 for you at the same time. Screen: This quality monitor has a screen so that you can see the detection data more clearly, you can easily get the results. Portable Size: This monitor is small in size and you can use it on your desk without taking up too much space, it is also easy to carry with you. Wide Use: This CO2 monitor can be used in your home, office, on the desk, hotel and other places. Built-in multiple sensors: This quality monitor uses infrared detection technology, laser detection technology and electrochemical detection technology to show you accurate data. Four-color alarm: There are four different colors to show the different qualities of what is being monitored: Green means the quality is good, and the colors from yellow to orange to red mean the quality is worse. Temperature unit conversion: The temperature units can be switched between Celsius and Fahrenheit, and when the monitoring data exceeds the standard, a sound will be emitted to indicate. Specifications: Material: ABS Color: White PM2.5 detection range: 0-999ug/m PM10 detection range: 0-999ug/m HCHO detection range: 0-9.999mg/m TVOC detection range: 0-9.999mg/m CO detection range: 0-1000PPM CO2 detection range: 400-5000PPM Charging: USB 500mA Type-c interface Battery: 1 x Lithium battery, 1200mAh (included) Item size: 90 x 70 x 35mm / 3.5 x 2.8 x 1.4in Package Contents: 1 x Quality Monitor 1 x Charging Cable The above package content only, other products are not included. Note: Light 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.