Q-See QSD6204 - Manual (Page 41)

Button functions:
1.PTZ Control
11.Record
2.Zoom in, Zoom Out 12.Search
3.HDD Play Mode 13.Reverse
4.File Play Mode 14.Record
5.Net Play Mode 15.Stop
6.Event List 16.Pause
7.Control Panel 17.Play
8.Remote Login 18.Forward
9.Change Storage Device 19.Playback Slider
10.Capture Image 20.Audio Slider
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