DIN Rail Dual Port Signal-Powered RS-232 Line Driver

The DCP35 series of products is designed to allow RS-232 devices to be inter-connected over distances sufficient to cover any industrial or institutional complex of buildings. These line drivers feature a DIN rail mountable enclosure for application to a junction box, a panel, a relay rack, the sides of computer equipment, or anywhere a DIN rail can be mounted. 

The DCP35 series does not require a power supply for operation. The use of low power circuits and a sensitive optically isolated receiver allows the devices to derive all necessary power from the RS-232 data and control signals. They are designed for full-duplex, asynchronous operation over two, DC-continuous, non-loaded, twisted-wire pairs. Two-wire simplex operation may be accomplished over one twisted- wire pair. The line driver circuits and, consequently, the host device are protected from electrical transients due to lightning strikes or operation of heavy industrial equipment. 

Each device features a convenient DCE (Data Communication Equipment) to DTE (Data Terminal Equipment) switch which reverses pins 2 and 3 of the RS-232 connector. For installation and system troubleshooting each unit has diagnostic Light Emitting Diodes (LEDs) on the transmit and receive lines. The DCP35 is available in a single or dual channel package. The RS-232 connector may be ordered as a male or female 9-pin connector. Field connection is made through pluggable solderless screw terminals.


3D CAD/STEP Files 3D CAD Models
Product Availability
Usually stock to 2-3 weeks


  • Signal-powered: No Power Source Required 
  • Optical Isolation: Breaks Ground Loops 
  • Heavy Duty Surge Protectors: Prevents Lightning Damage 
  • LED Diagnostic Indicators: Simplifies Installation and System Troubleshooting 
  • 19.2K bps (baud) to 0.5 Mile (0.8km), 9.6K bps to 2.0 Miles (3.3km), 1.2K bps to 7.0 Miles (11.7km) 
  • Four-Wire Full Duplex, Two-Wire Simplex 
  • Pluggable Solderless Screw Terminal Field Connections 
  • Null Modem Switch 
  • Single or Dual Channel Package 
  • CE Compliant

Block Diagram


Custom Modules

Below is a list of existing custom modules. If you don't see a module matching your target specifications, contact Customer Service and Application Support to discuss design guidelines and design feasibility. Customer Service and Application Support can be reached at sales@dataforth.com or +1-800-444-7644.
* ... Status Codes: PR = Production, PT = Prototypes, QU = Quoted

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