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Async RS232 Extender - DB25 Male to Coax

Extend async RS232 devices beyond the 50 ft limitation using coax and get up to 10 miles at 1.2 kbps or 1 mile at 19.2 kbps.


Limited Quantity In Stock
Typically Ships within One Week
1 Year Double Diamond™ Warranty (Standard)

*Required field

Product Features

  • Send RS-232 data farther by using coax cable.
  • Great for extending RS-232 signals in broadcasting applications.


Convert your RS-232 signal and get long-distance transmission over coax cable. With a pair of these drivers and your own coax cable, you can extend transmission distance up to 10 miles (16 km).

When speed is your priority, you can still transmit up to 1 mile (1.6 km ) at up to 19.2 kbps.

Tech Specs

Connectors (1) DB25 M with 6" (15.2-cm) cable attached; (1) built-in BNC F
Leads Supported Pins 2–8, 20
Operation Point-to-point
Power 115 VAC, 60 Hz, 28 VDC at 100 mA (230-VAC, 50-Hz version on request)
Protocol Asynchronous
Size 1.3"H x 2"W x 2.5"D (3.3 x 5.1 x 6.4 cm)
Speed 19.2 kbps at 1 mi. (1.6 km)
Product Includes:
  • Bulk Coax Cable (ETN62)Gender Changers (FA440, FA402)

  • Must be used in pairs.

    * 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.


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    Double Diamond™ Warranty (Standard)

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