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RS-232 Fallback Switch (FBS)

Complete disaster recovery. BLACK BOX® Fallback Switches provide automatic backup.

Price: $458.50

Extended Double Diamond™ Warranty Available (3 Additional Year)

Product Features

  • Instantly detects lapses in the primary line, then switches to a backup line.
  • Use it as a line sharer with automatic flow control.
  • Front-panel LEDs show you system status at a glance.
  • Details

    Keep leased-line failures from costing you time and money. The instant the RS-232 Fallback Switch detects a lapse in the primary line, it switches your system to a backup line. As soon as signal is restored, it switches back to the primary line. The switch can support data rates as high as your RS-232 line can carry.

    Tech Specs

    Leads Supported 2–6, 8, 15, 17, 20–22, 24; 1 and 7 tied common
    Switches (1) 3-position mode selector
    Interface RS-232, synchronous or asynchronous
    Connectors (3) DB25 F; master port is DCE, primary and alternate ports are DTE
    Indicators (2) LEDs: ALT/PRI
    CE Approval No
    Power 115/230 VAC, 60/50 Hz (switch-selectable), 8 watts
    Dimensions 2.3"H x 8.3"W x 11.5"D (5.8 x 21.1 x 29.2 cm)
    Weight 2 lb. (0.9 kg)

    NOTE: All 12 required leads of the RS-232 interface for async or sync are switched.

    This product works with:
    • RS-232 Cable, 25-Conductor, Male/Male (ECM25C)
    Questions? Contact our FREE Tech Support.

    NOTE: 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 Double Diamond™ Warranty Available (3 Additional Year) Diamond

    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 RS-232 Fallback Switch (FBS) comes with a standard 1 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.