B1: : Night mode setting (long press 2s to set)
B2: : Time setting (long press 2s to set)
Backlight setting
B3: : Alarm setting (long press 2s to set)
B4: ▲ : For setup preference
B5: ▼ : For setup preference
Max/min temperature and humidity check
B6: : Channel switch
B7: : Temperature alert setting (long press 2s to set, short press to turn on/off)
B8: : City Setting
B9: Battery compartment
B10: USB charger socket
B11: Power supply socket
B12: Support stand
5.2 Buttons
4
B1
B2
B3
B4
B5
B6
B7
B8
B9
B10 B11 B12