1, 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 high-definition display, , at a glance; Real-time display of 11 items of data, including 10 items of , 1 item of comprehensive data; 2, color grading instructions - not only display the specific value of each parameter Can also through the 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. 3, composite index view, according to the value of each item, intelligent calculation of the air quality composite index Environmental conditions at a glance. 4,Color grading display, through the color change of each value on the screen, quickly understand the indoor environmental conditions. 5,Wi-Fi connection, automatically synchronize the time and date. Please note: the physical slightly color difference or difference, does not affect the use, please do not mind, thank you! 3 alarms can be set to cope with daily matters reminder. Alarm clock reminder Time is 30S, can be set to change on APP. Timer can be set to turn on the countdown to cope with daily matters reminder. Alarm clock reminder time is 30S, can be set to change on APP. Timer can be set to turn on the positive time, to cope with the reminder of daily matters. With battery Colour:Black Material:plastic Package Contents: 1 x Air Quality Tester(4800 mAh battery upgrade) 1 x Cable 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.