Ethernet switch. Allows creation of IP communication networks among EN54 devices. Includes 4 Fast Ethernet ports + 2 SFP ports and 2 SFP transceivers. Redundancy: X Ring Pro. RSTP/STP (802.1w/1D). Security. 802.1x, RADIUS turn on. Management: SNMP v1/v2c/v3, WEB, Telnet, standard MIB, private MIB. Dual 12~48VDC power input AND 1 relay output.