On some model recorders, an error can be seen on screen "Config Error 20".
This usually occurs with older model recorders, when adding a new camera.
In order to rectify this issue, the camera must be initialized with a password see the guide here.
After the camera has been initialized, the security mode needs to be changed.
1. Log into the camera using a web browser.
2. Select "Setting", "System" then "Safety".
3. Set "Private Protocol Authentication" to "Compatible Mode". Select "Save".
4. Your camera should now be displayed on the recorder.
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