LDM485 - 1 Port Isolated RS-232 to RS-485 Converter


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.


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.

LDM485 Serial Converter
Featured in:Dataforth Communications
2 LDM485 versions available
Free delivery to UK mainland addresses

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Version information
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1 off price**
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LDM485 with male DB25 connector
2 in stock
LDM485 with female DB25 connector
Peripheral information
Lead time*
1 off price**
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12V AC UK Power Supply
2 in stock
12V AC US Power Supply
12V AC European Power Supply
All prices exclude VAT at current rate.
Minimum order value - £30 (exc. VAT and delivery).
Free delivery of the LDM485 to UK Mainland on orders over £150 (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)
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LDM485 overview

  • Industry leading industrial surge protection RS-232 to RS-485 converter
  • Complete isolation with optical couplers and power DC-to-DC converter
  • Six LED diagnostic indicators
  • DC to 19,200 baud at 3 miles (5km), 57.6K baud at 0.5 miles (0.8km)
  • Request-To-Send, Clear-To-Send handshake
  • Tri-state outputs for multidrop applications, up to 64 devices
  • Wide operating temperature range
  • Solderless screw terminal field connections
  • Available with a pinned male DB25 connector (LDM485-P) or a socketed female DB25 connector (LDM485-S)
The LDM485 is a compact RS-232 to RS-485 converter which features a complete electrical isolation barrier and heavy duty electrical surge protectors. These devices feature a rugged aluminum enclosure small enough to mount on the back panel of typical computer equipment, saving valuable desk and floor space. Isolation is provided by optical couplers and a DC-to-DC converter. The RS-232 connection is through male or female EIA 25-pin connectors. The RS-485 connections are made through convenient solderless screw terminals.
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