Any future question pls feel free to let me know~

Power supply: battery needs
Product size : 140 * 80 * 20mm
Temperature error : + -1C Resolution 0.1C
Humidity error: + -5% Resolution 1%
Operation:
Short press MODE， check the alarm
Press the MODE， View Calendar
Time Set :
Press and hold the MODE 3 seconds to enter time setting ， when the hour digits are flashing ， press UP or DOMN to set the hour ， press the MODE button flashes when the minutes ， press UP or DOMN to set the minutes.
Alarm settings :
Press the MODE button to view the alarm time ， press MODE button for 3 seconds to enter the alarm setting mode . Blinking is achieved when the hours Press the UP or DOMN to set the hour ， press the MODE button flashes when the minutes ， press UP or DOMN to set the minutes .
Calendar settings :
Short press MODE key twice to view the calendar Press the MODE button for 3 seconds to enter the calendar setting， when the year digits flash， set by UO or MOWN year， press the MODE button when the month is flashing， press UP or MOWN to set the month ， and then once a day when digital flashing， press UP or DOWN to set the date .
On / Off Alarm :
Press UP key to the on / off alarm
Max / Min :
Press MAX / MIN key to view the highest temperature and humidity ， the lowest on record in the press view of temperature and humidity .
12/24 hour format :
Press UP button for 3 seconds to convert 12/24 hour time display
Temperature display format :
Press DOMN :C/ F