4103 - 1 Port Isolated RS-232/422/485 Ethernet Serial Device Server (SeaLINK.ULTRA)
CE is a mandatory standard for products on the market in the European Economic Area. By CE marking a product, the manufacturer ensures that the item meets the essential safety requirements set out in the applicable CE directive.
This product fully adheres to the Restriction of Hazardous Substances Directive 2002/95/EC, RoHS for short.  The directive covers the restriction of use of certain hazardous substances in electrical and electronic equipment and was adopted in February 2003 by the European Union.
This product has a lifetime warranty against product failure (excludes user or enviromental damage).
The Federal Communications Commission (FCC) is an independent agency of the United States government that sets standards and governs the testing of conducted and radiated emissions such as EMI.
4103 Ethernet Serial Device Server
Free delivery to UK mainland addresses

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1 Port Isolated RS-232/422/485 Ethernet Serial Device Server with TR103/CA189 UK PSU
Peripheral information
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DB9 Female to DB9 Male Extension Cable, 72" in Length
CAT5 Patch Cable, 7' in Length - Blue
DB9 Female to DB25 Male Standard RS-232 Modem Cable, 72" in Length
CAT5 Patch Cable, 10' in Length - Blue
CAT5 Crossover Cable, 7' in Length - Yellow
DIN Rail Mounting Clips - for SeaI/O, R1100, 4103
2-Port Ethernet Surge Suppressor
All prices exclude VAT at current rate.
Minimum order value - £50 (exc. VAT and delivery).
Free delivery of the 4103 to UK Mainland on orders over £50 (exc. VAT and delivery) when purchasing online - excludes Northern Ireland, Isle of Man, Isle of Wight, Scottish Islands and the Channel Islands.

* Lead time is indicative and is subject to change at time of ordering. Next business day delivery on in-stock products only (when ordered before 3pm).
** Contact us for quantity or project pricing.
† Additional delivery charge may be incurred for certain postcodes (calculated at checkout)

4103 overview

  • Interface : Ethernet to RS-232/RS-422/485 Server
  • LAN : Ethernet 10/100BaseT (autosense)
  • Ports : 1 isolated port
  • Max. Data Rate : 230.4K bps
  • Max. Data Distance : up to 4000ft
  • Other Features : Appears as virtual COM ports to host machine
  • All modem control signals implemented
  • Automatic RS-485 enable/disable
  • Supports custom baud rates and 9-bit protocol
  • Optically isolated digital input for monitoring +5V to +24V
  • Reed relay output: 60V DC @ 500mA max
  • Built-in watchdog/reset circuit for fault tolerance
  • Connector : 1 x DB9M
  • Power Requirements : 9 ~ 30V DC @ 3.25W (no power supply included)
  • Operating Temperature : 0 to +70C
  • Software : SeaCOM software drivers included
  • Warranty : Lifetime Warranty
The 4103 Ethernet to serial server is the easiest way to connect a single RS-232, RS-422, or RS-485 serial port to your Ethernet network. The 4103 also includes a reed relay output and an optically isolated input to allow remote control and monitoring of real world devices.

SeaLINK products use industry standard RFC 2217 TCP/IP protocol for maximizing compatibility with the widest range of applications and devices.

The included software works under a wide variety of operating systems including Windows 98/ME/NT/2000/XP, and the 4103's serial ports appear as virtual COM ports to the host machine.

Standard serial operating calls are transparently redirected to the 4103, guaranteeing compatibility with legacy serial devices and enabling backward compatibility with existing software.

Serial tunneling is also supported, allowing two native serial devices to communicate over a network. Alternatively, raw data socket mode is supported, eliminating the need for a driver.
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T: +44 (0)1782 337 800 • E: SALES@IMPULSE-EMBEDDED.CO.UK
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