Edimax Technology IC-3010 - Manual (Page 100)

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3.8 Scan
If you have more than one camera configured, and you wish to switch the displaying image
between cameras, you can click „Scan‟ button to switch between all configured cameras.
Click „Scan‟ button once to activate scan function (scan icon will become blue ), click
again to stop scanning (scan icon will become white ).
NOTE: If a camera is configured but disconnected, it will still be displayed in a
scan sequence (you
’ll see nothing and you’ll see ‘Disconnected’ text
displayed at the upper-left corner of display image).