Fiber Optic Ethernet Media Converters Fiber Optic Ethernet Switches Fiber Optic Ethernet Multiplexers Telephone Extenders Multiplexers  Party Line & Emergency Serial to Ethernet Converters Serial toT1/E1Converters          Fiber Optic Ethernet Self-Healing Ring   Fiber Optic Modems  Fiber Optic Multiplexers WDM Fiber Optic Converters & Repeaters

FIBER OPTIC SELF-HEALING ETHERNET RING (Industrial Hardened) Model # TC3720 TC3820 TC3840 Interface 6 - 10/100 Mbps UTP 2 - Fiber Optic 100Base-FX     6 - 10/100 Mbps UTP 2 - Fiber Optic 1000Base-SX/LX       Fiber Optic 1000Base-SX/LX          MM (850 or 1300nm) Yes - 1300nm Yes Yes SM (1310 or 1550nm) Yes Yes Yes SM - 1Fiber (WDM) Yes Yes Yes Optical Redundancy Yes Yes Yes Hi-Temp (-20 ~ 70°C) Yes Yes Yes Extreme Temp (-40 ~ 80°C) Yes Yes Yes Rack Mount Chassis 1 U High  Yes  Yes  Yes Rack Mount Chassis 4 U High      Yes DC Power  12, 24, -48 or 125 VDC  12 VDC12, 24, -48 or 125 VDC  12, 24, -48 or 125 VDC AC Power 115/240 VAC 115/240 VAC 115/240 VAC Model # TC3720 TC3820 TC3840