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DDW-221 Ethernet Extender

(No longer available)

The DDW-221 can be used to extend Ethernet networks over existing copper cables in point-to-point, daisy-chain or redundant ring applications. Point-to-point transmission distances of up to 10 km can be achieved with data-rates of 5.7 Mbit/s possible over shorter distances on a single copper pair. The redundant protocol can be used ether on the SHDSL interface or on the built-in Ethernet switch. Our unique FRNT (Fast Recovery of Network Topology) technology is the fastest protocol on the market to re-configure a network in the event of any failure of a link or hardware. The built-in 4 port Ethernet switch makes the DDW-220 the only necessary component required to create a small network. Total galvanic isolation between all interfaces, extended type approvals and rugged mechanical design as well as extensive over-voltage protection and line interface voltage suppression makes the DDW-220 the best solution in harsh industrial environments.



  • Redundant protocol (FRNT) on SHDSL or on the Ethernet switch
  • Plug and play
  • Data rates up to 5.7 Mbit/s
  • Distance up to 6.2 miles (10 km)
  • Extensive line protection
  • 2 x SHDSL
  • SNMP and comprehensive diagnostic
  • 16 – 60 VDC power supply
  • Reverse polarity protection
  • 4 port Ethernet switch
  • Web interface
  • Made for extreme environments
    • – 40°F to +158°F
    • Metal housing
    • IP 40
    • DIN mounting