Come and try this new type multifunctional quality detector, compared with other quality detectors, this detector can show you 6 different detecting results at the same time, and the detection function is more comprehensive. If you're looking for a new quality monitor, give it a try, it won't let you down. Features: 6 In 1 Quality Tester: Come and try this new type multifunctional quality detector, compared with other quality detectors, this detector can testing PM2.5, PM10, HCHO, TVOC, CO and CO2 for you at the same time. Display Screen: This quality monitor with a display screen for you to see the detecting data more clearly, you can get the results easily. Portable Size: This monitor is small in size and you can use it on your desk without taking up too much desk space, also easy for you to carry. Wide Applications: This CO2 monitor can be used in your home, office, destop, hotel and other places. Built-in Multiple Sensors: This quality monitor using infrared detection technology, laser-detection technology and electrochemical detection technology to show you the accurate data. Four Color Alarm: There are four different color to show the different qualities of the being monitored: The green means the quality is well and the colors ranging from yellow to orange to red mean worse quality. Temperature Units Conversion: The temperature units can be switch between degrees Celsius and Fahrenheit and when the monitoring data exceeds the standard, sound will be emitted to indicate. Specifications: Material: ABS Color: Black PM2.5 detecting ranges: 0-999ug/m PM10 detecting ranges: 0-999ug/m HCHO detecting ranges: 0-9.999mg/m TVOC detecting ranges: 0-9.999mg/m CO detecting ranges: 0-1000PPM CO2 detecting ranges: 400-5000PPMRecharging : 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 Only the above package content, 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.