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Remote Single-Mode Fiber Optic Repeater, BNC/Single-Mode ST

Top-quality, standalone repeater for legacy 10-Mbps Ethernet networks.


Please call 877-877-2269 for a replacement product or part.
Extended Double Diamond™ Warranty Available (3 Additional Year)

Product Features

  • Support for all Ethernet media types, including standard or Thin coax, 10BASE-T, and fiber.
  • Link Ethernet segments via fiber cable to send data up to 6.2 miles (10 km).


  • Compatible with 10BASE-FL and FOIRL standards for extended fiber connections.

  • Break the Ethernet coax distance barrier for your network. Use Black Box® Remote Single-Mode Fiber Optic Repeaters to get greater distance by linking two Ethernet segments via fiber cable. The remote repeaters are 10BASE-FL compliant, so you can make long-distance connections. The repeaters are backwards compatible with FOIRL, making them easy to incorporate into your fiber network.

    Autosensing power supplies.
    Just plug in these repeaters. Their internal power supplies adjust automatically to any power source with AC voltage from 90 to 260 VAC and power input frequencies between 47 and 63 Hz.

    Full repeater functionality.
    Each repeater has port connections so you can connect two Ethernet segments. Each segment conforms to IEEE 802.3 specifications for length and number of nodes. And you get precise LAN transmission—each unit performs full signal regeneration and retiming.

    Tech Specs

    CE Approval Yes
    Connectors Standard Ethernet: (1) DB15 F; ThinNet: (1) BNC for RG-58A/U coax cable; 10BASE-T: (1) RJ-45; Fiber optic: (1) pair of ST®
    Indicators All models: PWR, RX, JAB, COL; AUI and BNC ports: (1) Port, (1) RX per port; 10BASE-T and fiber ports: (1) Link, (1) Port, (1) RX per port
    Power 115–260 VAC, 60–50 Hz autosensing
    Size 1.8"H x 8.5"W x 5.4"D (4.6 x 21.6 x 13.7 cm)
    Standards Depends on unit: Ethernet v. 1.0/v. 2.0; IEEE 802.3; 10BASE5, 10BASE2, 10BASE-T, 10BASE-FL, FOIRL; DTE
    Weight 2.5 lb. (1.1 kg)

    This product works with:
    • Standard Ethernet Backbone Coax Cable (LCN100)
    • ThinNet Cable (LCN300)
    • CAT5 100-MHz Patch Cable, 4-Pair, Straight-Pinned (EVNSL01, etc.)
    • Single-Mode 9.0-Micron Duplex Fiber Optic Cable, ST–ST (EFN310)
    • Premium Ceramic, Mulimode 62.5-Micron Fiber Optic Patch Cable (EFN110)
    Questions? Contact our FREE Tech Support.

    * Technical specification weight is the unit weight. It is not the packaged shipping weight. For shipping weight, please contact Black Box customer service at 877-877-2269.


    Double Diamond Warranty

    Extended 1 Year Warranty Available

    Protect your purchase with an additional 1 Year Double Diamond™ warranty!
    Cost: $138.00

    Extended 3 Year Warranty Available

    Protect your purchase with an additional 3 Year Double Diamond™ warranty!
    Cost: $275.99


    Double Diamond™ Warranty (Standard)

    Take the risk out of equipment purchases with the Double Diamond™ Warranty from Black Box Network Services.

    The Double Diamond Warranty is our warranty that protects your Black Box® brand products* from accidental damage, including drops, water, and power surges.

    The Remote Single-Mode Fiber Optic Repeater, BNC/Single-Mode ST comes with a standard 3 YEAR warranty already included.

    During the warranty period, Black Box Network Services will repair or replace your damaged equipment within one week of receipt at NO CHARGE!*

    Plus, get an Extended Double Diamond Warranty.

    You can also extend your warranty or protect a previously purchased Black Box® brand product** for an additional year—for only 10% of the purchase price! Or, extend your coverage for a full three years for only 20% of the purchase price!

    Ordering an extended warranty is easy: When viewing a product in your shopping cart, just select the one or three years of additional coverage in the dropdown menu under “Warranty Options.” For details, contact Customer Service at 724-746-5500.

    * Warranty subject to certain exclusions and limitations ** Certain products may not be eligible.

    What’s more, we also have a 45-day return policy. Simply call Customer Service for a Return Authorization (RA) number, return your product in new condition and in the original package, and receive a full refund.