Night Owl STA-168 - Manual (Page 49)

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Use this menu to access the Camera Settings Menu, Color Setup
Submenu, Privacy Zone Submenu, and PTZ Menu.
Chapter 16 Camera Menu
Be sure to “Apply” all changes made to the menus. If you do not
apply the changes, they will not be saved. You can also select the
“Default” button on any page to restore back to DVR default
settings.