10%~90% (non-condensing) Default (Normal mode) : All ports can communicate with each other, Extend (Surveillance mode): Transmission distance up to 250 meters. Downlink ports can communicate only with
工作模式
uplink ports, VLAN (Secure mode): Downlink ports can communicate only with uplink ports. Enabling PD keepalive function, the switch will restart the IPC via PoE power when the IPC sends no message in a period of time Hardware Specification