CCTV stops being simple once the customer's IT team asks for separate VLANs, multicast control and monitoring. These managed switches keep camera traffic off the office LAN and give the installer the tools to prove it.
VLAN segregation, IGMP snooping so multicast video does not flood every port, port-level access control and QoS for recording traffic. A pure L2 managed switch is enough wherever the network keeps a single IP subnet.
Multi-tenant buildings, camera subnets per block, or a site that already routes between floors. Then inter-VLAN routing on the switch removes the need for an extra router and keeps the camera VLAN isolated.
Compare RS1008K-8L-10S-M for an eight-port managed node with RS1024K-24L-4S-M for a 24-port frame.