GardePro B180C Instruction Manual page 18

5.1.4 CAMERA SWITCH
You can press the Fn and Down button to enter Camera switch
interface.
If there is only one camera you can just find a camera icon. If
there are more than one camera, you can select different camera
to display on your monitor.
You can press Left / Right to shift to different icon. The icon's
frame will turn green when you pass over it. You can press OK to
select a camera or Patrol mode. The selected camera icon will be
ticked.
If you select Patrol mode, you will see the video from each online
camera one by one on the monitor according to the Patrol interval
you have set in MENU > General settings > Patrol interval.
The patrol interval can be 5 seconds, 10 seconds, 20 seconds, 30
seconds, or 60 seconds.
If a camera is offline, the offline mark can be seen on the upper left
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