Edimax Technology IC-7010PTn - Manual (Page 116)

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3-6 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).