Aposonic A-S1604R4 - Manual (Page 56)

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OTHER FUNCTIONS
User can use other functions by clicking the left of mouse
A. Snapshot:
User can save any single picture from image.
B. Performance:
User can select image quality (high, medium & low).
C. Use Overlay:
User can use Overlay function.
D. Play audio:
User can play audio function by channel.
Note: remote user can receive audio from DVR & the audio will be saved with image
when processing video backup.