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Click to enlarge LES421A
LES421A  Black Box Corporation ®  
Black Box 1-Port Hardened Serial Server - Twisted Pair - 1 x Network (RJ-45) - 1 x Serial Port - 10/100Base-TX - Fast Ethernet - Rail-mountable
Type: Device Server
Condition: New Retail Box (Only available for shipment within the Continental United States)
MSRP: $299.95
Our Price: $239.63
Savings: $60.32 (20%)
Final Price: $239.63
Quantity: of 3 available for Special Order  
Quantities greater than what is in stock will need to be back-ordered.
** This item is a SPECIAL ORDER item and does not include Express Technology's standard warranty and terms. Click here to review our complete Special Order Policy & Terms.
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Inventory updated on date: December 13, 2019 1:00:00 AM

Product Details for LES421A
LES421A: Black Box 1-Port Hardened Serial Server - Twisted Pair - 1 x Network (RJ-45) - 1 x Serial Port - 10/100Base-TX - Fast Ethernet - Rail-mountable

Technical Details
Product Type Device Server
Manufacturer Part Number LES421A
Manufacturer Website Address http://www.blackbox.com
Marketing Information
  • Enables you to monitor a serial industrial device from your office.
  • Configure a device, troubleshoot, upgrade firmware, and more.
  • Rugged design for operation in a wide temperature range.
  • UL® Listed for use in Class 1 Division 2 hazardous areas.
  • NEMA TS-2 rated for use in transportation applications.
  • Offers direct IP, virtual COM port, or paired modes of operation.
  • Features a DB9 port and terminal block for serial connections.
  • Equipped with a 10-/100-Mbps port for LAN/WAN connectivity.
  • Built-in Web server for browser-based management.
  • Includes easy-to-use configuration software.
  • Boasts high throughput with low latency.
  • Slim IP30 enclosure saves on DIN rail space.

Communicate easily with an RS-232, RS-422, or RS-485 serial device via your LAN or WAN with the rugged and compact 1-Port Hardened Serial Server from Black Box.

It's just what you need to improve productivity and cut down on the amount of time required to configure or troubleshoot a serial device located on a factory floor or in a remote location.

Eliminate visits to a distant site just to make a minor change to a configuration. You can do all this from the comfort of your office using an Ethernet LAN or WAN connection, or even from home via a standard Web connection.

A simple-to-install, user-friendly Web configuration software application enables programming through a browser connection. No time-consuming setup is required.

Set it up to operate in one of three modes:

  • In Direct IP Mode, you use TCP/IP or UDP/IP to communicate directly with the serial device.
  • In Virtual COM Mode, you can communicate with the device via your network just as if the device was connected to a physical COM port.
  • In Paired Mode, multiple serial devices can communicate with one another using network tunneling (more than one 1-Port Hardened Serial Server is required).

The Hardened Serial Server has a standard DB9 serial port and a removable terminal block for the RS-232, RS-422, or RS-485 device connection, and an autodetecting 10BASE-T/100BASE-TX port for a CAT5 connection to your Ethernet network.

Plus, for reliable operation, the serial server offers a heartbeat connection, which detects any TCP communication failures and sends out signals every five seconds until the system is reconnected.

Limited Warranty 5 Year
Weight Approximate 4.80 oz
Form Factor Rail-mountable
Manufacturer Black Box Corporation
Product Model LES421A
Product Name 1-Port Hardened Serial Server
Brand Name Black Box
Country of Origin United States
Height 1.2"
Width 3.2"
Depth 4.7"
Network Standard 10/100Base-TX
Environmentally Friendly Yes
Environmental Certification WEEE
Wireless LAN No
Ethernet Technology Fast Ethernet
USB No
Number of Network RJ45 Ports 1
Network RJ45 Yes
Serial Port Yes
Parallel Port No
Network RJ11 No
Management Port No
Phone Line RJ11 No
Media Type Supported Twisted Pair
Number of Serial Ports 1
PoE RJ45 Port No
Centronics Port No

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Additional Information for LES421A
Computer Parts90 Day Replacement Warranty on all goods from our shelves.
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