Samsung EC-WB2200BPBUS 사용자 설명서

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Using a smart phone as a remote shutter release
Wireless network
  116
When you use this feature, the ideal distance between the camera and the smart 
phone may vary, depending on your surroundings.
The smart phone must be within 23 feet (7 m) when you use this feature.
It will take some time to capture the photo after you release   on the smart 
phone.
The Remote Viewfinder function will deactivate when:
-
either the camera or the smart phone turn off
-
either device loses its connection to the WLAN
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the Wi-Fi connection is poor or unstable
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you perform no operations for approximately 3 minutes while connected 
The camera screen turns off if you perform no operations on the camera for 
30 seconds.