AVer IWH3216 Touch3216 Touch II user manual - Manual (Page 46)

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16. When PTZ control icon has been click on, it will turn to red, the mouse course will become a red cross,
and PTZ control bar will show up on the screen.
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- User can move the on screen PTZ controller to any position of screen
- The on screen PTZ controller only display on a channel screen at a time.
17. Using the red cross mouse course to zoom in/out the camera view by drag on the screen directly.
18. To focus in/out, click the button on PTZ control bar.