By: Nitek
Video Transmission Solutions
Contact us for lowest price (800) 284-2288, (858) 565-1101,, or fax (858) 300-4193
RS232 line driver extends RS232 up to 12,000 feet.

The Nitek DL2105 is designed for operation over category cabling and standard 24 AWG telephone pairs. This system allows you to use unshielded twisted pair cable making it unnecessary to use 18 AWG shielded pairs. The unit works equally well over existing communication cables, computer network spare pairs or new cable installations. A highly balanced output design assures that the system will not interfere with other equipment on the network. The DL2105 units are designed for easy connection to standard security equipment, including keyboards, matrixes, P/T/Z systems, access control systems, CPU units, etc. The DL2105 is a two unit system that connects using twisted pair from transmitter to receiver to extend RS232 up to 12,000 feet. All connections are via a screw less terminal block that accepts wire sized from 12 to 26 AWG. The system works with all Baud rates up to 64K. It is possible to daisy-chain up to 24 receiver units (extra receivers must be ordered separately) from a single transmitter.

DL2105 features include:

  • EIA RS232 standard inputs and outputs
  • Data speeds of 64K Baud
  • Built-in surge suppression
  • Balanced communication output can be run in the same cable with telephone, video and other computer signals
  • Screw less terminal blocks allow easy connection to any wire type from 12 to 26 AWG
  • RoHS COMPLIANT 2002/95/EC



1.1″ H x 2.6″ W x 4.3″ D (each unit)

Power Requirements

14-18 VDC @ 100mA (transmitter) 14-18 VDC @ 60mA (receiver) (wall transformers included)

Signal Standard

All RS232 signals meet EIA standards

Input Connections

Twisted pair Connections via screw less terminals12 to 26 AWG wire

Data Rate

Up to 64K Baud

Surge Protection

Built-in surge suppression is provided when earth ground connection is used

Temperature Range

-20C to +65C

Humidity Range

0 to 98%, non-condensing

Enclosure Material

Black, ABC flame retardant plastic

Shipping Weight

2.5 lb

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Prices and specifications subject to change without notice.