Continue Shopping View Cart
Markertek - The Future of Broadcast Supply

Call 800-522-2025
M-F 8:30am - 7pm EST

Free Shipping Promo Box

FREE SHIPPING No Minimum Order!

SHOP MARKERTEK EVERYDAY for all of your needs. Free shipping on almost every order placed on our website.
Special order & oversized freight intensive items ship at an additional cost. Continental US orders only.

Fast Economical International Shipping
Markertek makes it EASY for our international customers to get their orders!

At check-out you can view our very affordable international shipping rates that are ALL-INCLUSIVE with your GUARANTEED LANDED COST and NO SURPRISE FEES!

*Economy International Shipping delivery time is approximately 7-14 days. Economy International Shipping is available to select countries. Not all products are eligible.

Secure LoginClose X

Returning Markertek Customers

New Markertek Customers

Why Create an Account?

Creating a Markertek account now will save you time on future orders. You'll have full access to your order history and a personalized shopping experience.

ESE ES-251 1x24 RS-232 Distribution Amplifier
    Questions? Ask a Markertek Expert:
    800-522-2025 Email

    ESE ES-251 1x24 RS-232 Distribution Amplifier

    Manufacturer: ESE

    Item #: ESE-251   •   MFG #: ES-251


    List Price:$1,495.00
    Our Price:$1,420.49

    free ship
    Availability: Direct Ship From Manufacturer
    Item ships directly from the manufacturer. Normal delivery time is 2-7 business days and is subject to manufacturer availability. Need it sooner? Call 800-522-2025, or email Customer Service for expedited delivery options.
    • 2 - 7 Day Normal Delivery Time - Faster Shipping Options at Checkout or Call Us.



    The ES-251 is an RS-232-C Isolation and Distribution Amplifier. Three 1 x 8 amplifier circuits allow the incoming signal to be distributed via the 24 outputs. The unit receives RS-232-C and buffers the signal so that each of the 24 outputs can drive a single "user" at a distance of up to 50 feet (per output). All inputs and outputs are via rear mounted terminal DB-9 connectors. The two main purposes of the ES-251 are to:

    1) improve the distribution capabilities of RS-232-C
    2) provide isolation between users of RS-232-C

    • Features

      • Use for distributing ASCII Time Codes
      • 24 isolated outputs
      • Male DB-9 Input connector
      • Female DB-9 Output Connectors
      • RxD feed thru on Channel 1 output for Query Applications
      • 220-240 VAC (110-120 VAC is standard) & UL options available
    • Product Options

      • J 220 VAC/50 Hz Operation: The unit is configured to operate from 220 VAC line voltage. 117 VAC 50/60 Hz is standard.
      • UL "UL" Approved Power Supply: The unit is supplied with a UL/CSA approved wall mount power supply.

    Add Accessories for your ES-251: