Time And Date Adjustment
1.Long press the"M"switch bultton to enter the time and date adjustment mode.After the screen flashes,press the"+"plus and"-"minus keys to adjust Specific values.
2.Click the“M switch button to switch between year,month,day,and hour.After confirming the adjustment,press the"M"switch button to complete the adjustment.

Operating Manual
Firstly,please confirm whether the appearance of the air quallty detector is intact and whether
the accessories are complete after opening the packaging;
Instructions
USB-Type-c power cord (1 meter)
Certificate of conformity
There is a protective flm on the product screen

ATTENTION！
After the instrument is started,it enters automatic callbration for about 2 minutes.
After completion,there is no need to calibrate again and normal detection is enabled. The optimal state of the product is around 30 minutes of operation,and the data is relatively accurate.

Indicate
Press and hold the ◎key for about 3 seconds, and the instrument will start displaying the current air qualtity parameters.
CO2 detertor: It displayings current CO2 data as well as temperature and humidity data.Thecolored ring will be changed based on the CO2 parameters.Green is 400-800ppm,yellow is 801-1800ppm,and red is 1801-5000ppm.(Excessive alarm for about 10 seconds.)
By plugging in a 5V power supply,the USB-Type-c can be charged or used direcly with a 5V
Battery level display:White indicates normal level,red indicates low level,and flashingindicates charging status,Charging does not flash to indicate full charge.
Energy saving mode:After 30 minutes of instrument operation,enter the screen saver energy -saving mode and press any key to turnoff the energy-saving mode,In energy-saving mode, only display;battery level,time,and air status.