The 820 units are a pair of Ethernet line drivers that utilize existing Voice CAT2 Telco wiring or better that drives your Ethernet data, dual voice lines and Power Over Ethernet up to 900ft or 275m distance over a 4-Pair (8 wire) telephone line or CAT5 cabling. No power required at the remote end, No Firmware to upgrade or manage. These units are easy and rapid to install with plug and play RJ-45 Ethernet jacks to quickly insert your wiring and go. Data SheetManual Extended Ethernet with single voice over 2 pair minimum or have dual voice, Ethernet and native PoE over 4 pair over existing Telephone wiring / Category rated wiring. Rapid LAN style installation RJ45 jacks - no programming required. Maintains dual lifeline phone service (analog or digital telephone lines). Supports VoD (Video on Demand) and MPEG IP channels. Supports VoIP (Voice over IP). Network Equipment independence - Transparent to protocols, applications and MAC addresses. Sustained 15 Mbps full-duplex service delivery end to end. Native PoE support for any standalone PoE injector, Enable-IT 350 48V PoE Injector included with 820 Kit.The 820 Kit is a complete solution, including the following: (2) 820 LRE units (2) 10" Black Ethernet patch cords (1) Enable-IT 350 48V PoE Injector (1) Country specific 5v/2A switching wall power adapter (1) 820 Ethernet Extender Quickstart Guide