A. 15 in 1: time, temperature, humidity, carbon dioxide, carbon monoxide, TVOC, HCHO, PM2.5, PM10, PM1.0, PM0.3, timer, timer, alarm clock; 2.8-inch TFT color display, at a glance; Real-time display of 11 items of data, including 10 items of and 1 item of comprehensive data. B. Color grading instructions - not only display the specific value of each parameter but also through different colors, quickly understand the indoor environmental conditions; values and three-color indication can understand the comprehensive environmental conditions. 11 real-time view of the value, real-time update 10 items per second (temperature, humidity, CO, CO2, HCHO, TVOC, PM particulate matter 0.3, 2.5, 1.0, 10) detection data; 1 integrated value. C. Composite index view, according to the value of each item, intelligent calculation of the air quality composite index; environmental conditions at a glance. D. Color grading display, through the color change of each value on the screen, quickly understand the indoor environmental conditions. E. Wi-Fi connection, automatically synchronize the time and date. F. Please note: the physical may have slight color difference or difference, which does not affect the use, please do not mind, thank you! G. 3 alarms can be set to cope with daily matters reminder. H. Alarm clock reminder. I. Time is 30S, can be set to change on APP. J. Timer can be set to turn on the countdown to cope with daily matters reminder. K. Alarm clock reminder time is 30S, can be set to change on APP. L. Timer can be set to turn on the positive time, to cope with the reminder of daily matters. M. With battery. N. Colour: Black. O. Material: plastic. P. Package Contents: 1 x Air Quality Tester, 1 x Cable. Only the above package content, other products are not included. Q. Note: Light reflection and different displays may cause the color of the item in the picture a little different from.