To install the Reolink 520 A camera on your Synology NAS, you can follow these steps:

First, make sure your Synology NAS is running the latest version of the DSM operating system.

Open the Synology Surveillance Station application from the DSM web interface.

Click on the "IP Camera" button in the top left corner of the Surveillance Station window.

In the IP Camera window, click on the "Add" button at the bottom left.

Select "Reolink" from the list of camera brands, and then choose the "520 A" model.

Enter the IP address of your Reolink camera, along with the username and password you use to access it.

Click "Test Connection" to make sure the camera is working properly, and then click "Next" to continue.

In the Camera Configuration window, you can customize settings such as resolution, frame rate, and motion detection. fnf

Once you have configured the camera settings to your liking, click "Apply" to save them.

Your Reolink 520 A camera should now be successfully added to your Synology NAS and ready to use with the Surveillance Station application.