Black Box ME890A-R2 Async RS232 Extender over CATx, DB9 with Control Signals to Terminal Block

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Black Box ME890A-R2 Async RS232 Extender over CATx, DB9 with Control Signals to Terminal Block
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  • Regular Price: $344.99
Only 1 left in stock - order soon! Inventory as of date 07/22/2026.
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Overview


Features:

  • Use long-distance CATx links to communicate with serial devices.
  • Control presentations remotely.
  • Transfer data between computers.
  • Ideal for a wide variety of applications.
  • Optical isolated.
  • Maximum speed of 250 K.
  • Easy installation. The driver provides full-duplex transmission and hardware handshake signals. There's no need for setup or configuration.

These CATx Line Drivers enable the user to place a receiving device up to 4000 feet away from the sending device. The local unit has a DB9 female connector and is configured as a DCE device; the remote unit has a DB9 male connector and is configured as a DTE device. This allows the local/remote pair to function as a long extension cable between two RS-232 devices. There are no user-configurable settings. These units pass TXD, RXD, RTS, and CTS signals to allow application to use hardware handshake signals if neccessary.

  • Signals include RD, TD, RTS, CTS, GND, plus DTR (or DSR) asserted.
  • Local and remote units can be up to 4000 feet (1250 m) apart.
  • Fixed DCE local and DTE remote
  • Operates point-to-point in full-duplex mode
  • Provides 1000-VDC isolation between RS-232 interface and RS-485 interface
  • Requires one external power supply (included) at each end.
  • Supports data pair plus one control pair, and asserts one additional control line

Product Includes:

  • (1) Local Unit
  • (1) Remote Unit
  • (2) 120 V Power Supplies

NOTE(s):

This product works with:

RS-232 Cable, 25-Conductor, Male/Male (ECM25C-MM, ECM25T-MM)

CAT5 Shielded, Solid, 100-MHz Bulk Cable, 4-Pair (EVNSL70A-1000)

CAT5 Unshielded, Solid, 100-MHz Bulk Cable, 4-Pair (EYN842A-1000)

⚠️ Attention CA Residents: Prop 65 Warning

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