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Short-Haul Modem–B Parallel (SHM–B Parallel), Standalone Transmitter

Push your parallel data an amazing 5 miles!


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

Product Features

  • Parallel to parallel or use with the Short-Haul Modem–B Async (ME800A-R2) for parallel to serial or serial to parallel.
  • Send data at 19.2 kbps up to 1 mile (1.6 km) away.
  • Send data at 1200 bps up to 5 miles (8 km) away.


With a standard parallel connection, you can send data about 25 feet (7.6 m) before encountering electrical interference and signal degeneration. For longer distances, you need the BLACK BOX® Short-Haul Modem–B Parallel.

With a pair of these short-haul modems, you can send data to printers up to 5 miles (8 km) away. Use the T and R models together for parallel-to-parallel applications. To run parallel-to-serial or serial-to-parallel applications, combine either model with our Short-Haul Modem–B Async (ME800A-R3).

Tech Specs

NOTE: Must be used in pairs (one transmitter, one receiver) or with the Short-Haul Modem–B Async (ME800A-R3).

These products work with:
• GigaBase® 350 CAT5e, 350-MHz Bulk Cables, 4-Pair (EYN851A)
Questions? Contact Tech Support.
Also works with:
• Short-Haul Modem–B Async (ME800A-R3)
The card versions also work with:
• Short-Haul Modem–B Racks (RM007, ME810)
Questions? Contact 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: $18.27

Extended 3 Year Warranty Available

Protect your purchase with an additional 3 Year Double Diamond™ warranty!
Cost: $36.53


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 Short-Haul Modem–B Parallel (SHM–B Parallel), Standalone Transmitter 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.