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Strømforsyning 5v, usb kabel medfølger
Samlevejlednning : http://www.diyleyuan.com/jc/082V4.html

S1: add key S2: function key
Special purpose setting of key (S1):
a. Switch setting of optical control function:
under normal working state of clock, short press S1 to turn off or turn on the optical control function

b. Setting of temperature, month, day and week display switch:
long press S1 (3-5 seconds) when the clock is in normal working state to turn off or turn on the
display function of temperature, month, day and week

c. Alarm off setting:
when the alarm rings, short press S1 to turn off the alarm.