Synology Surveillance Device License Packs are designed for expanding cameras, I/O modules, intercoms, access controllers, IP speakers, and transaction devices set up on Surveillance Station. By default, you would have default licenses that come with NAS/NVR; extra licenses can be purchased for additional surveillance devices as your business grows.

The 4-Camera License Key allows you to add 4 cameras to your Surveillance Station. By applying the license key on the Surveillance Station user interface, you can set up and manage the additional cameras on your network.