PCI 2-Port RS-232, RS-422, RS-485 Serial Interface

Part: 7201   Model: Ultra COMM+2.PCI

(3 customer reviews)


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The 7201 PCI serial interface provides two serial ports, each individually configurable for RS-232, RS-422, or RS-485. The board is capable of data rates to 460.8K bps and automatically handles RS-485 transmitter enable/disable. The 7201 utilizes 16C850 UARTs that provide 128-byte Tx/Rx FIFOs and is Universal Bus (3.3V or 5V) compatible. Ordering options allow the choice of UARTs with larger FIFOs and support for custom baud rates.

Sealevel’s SeaCOM software makes installation and operation easy using Microsoft Windows and Linux operating systems.


Additional information

Communications Chip


Electrical Interface

RS-232, RS-422, RS-485

Humidity Range

10 – 90% Relative Humidity, Non-Condensing

Host Interface(s)


Max Data Distance

4000 feet

Max Data Rate

460.8K bps

Operating Temperature

0°C to 70°C (32°F to 158°F)

PC Bracket

Standard Height

# of Ports


RoHS Compliant


Serial Connector(s)


Storage Temperature

-50°C to 105°C (-58°F to 221°F)

UART Series

850 UART

  • Compliant with RoHS and WEEE directives
  • Each port individually configurable for RS-232, RS-422, or RS-485
  • 16C850 buffered UARTs with 128-byte FIFOs
  • Data rates to 460.8K bps
  • Universal Bus (3.3V and 5V) compatible
  • Automatic RS-485 enable/disable
  • Two DB-9M connectors

Windows Software

Software: SeaCOM - Windows

Linux Software

Software: SeaCOM - Linux


Datasheet: 7201


Manual: 7201

3 reviews for Ultra COMM+2.PCI

  1. GWI

    Flexible and reliable. Good software – we have used this card for years with our products. Never a problem unless lightning strikes.

  2. TRS

    Great interface/Reliable
    The 7201 is used in many of our labs to interface with various data acquisition and/or control equipment. The reliability and flexibility of these interfaces cannot be beat! Recently placed an order for a handful of 7205e serial interfaces to replace the 7201’s but only because the computers we are upgrading to do not have PCI slots!

  3. Rod LM

    Best RS422 PCI Card and Great Service
    We have had three of these cards working 5 days a week for the last 13 years. Had one fail in 2009 and Sealevel Systems repaired it within a month and at no cost. Great Company and Great Product.

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