External, SNMP Adapter That Allows Up To 4 (Four) UPS's To Connect To Ethernet (10BT Or Thinnet) As A Managed Device. Four Ethernet Serial Ports. Supplies UPS Testing And Real Time Status Information To Your NMS As Independent Nodes In The Network. 2 Smart and 2 Contact Closure Units Can Be Connected At The Same Time. This Is The Only SNMP Option For The OmniSmart UPS.