Black Box Async RS-232 to Current Loop Interface Converter - DB25 to Terminal Block
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Black Box Async RS-232 to Current Loop Interface Converter - DB25 to Terminal Block

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$ 282.69
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  • Optical isolators in both the Transmit and Receive loops keep out electrical interference.
  • AC-powered, active or passive.


With front-panel LEDs, you always know the status of your data. The easy-to-use self-test feature checks the converter's internal circuitry.

Connect this converter to either a modem or mux. Just flip the switch to attach a terminal or computer. Your RS-232 devices are protected from dangerous transients, too.


  • Two LEDs monitor data flow.
  • DCE/DTE switch for easy direct connection no special cables needed.
  • Has built-in optical isolation on the receive pair.
  • Configure this AC-powered converter to match your system's 20-, 30-, or 60-mA Current Loop interface.
  • Interconnect a digital 20/30/60-mA unipolar Current Loop interface to an RS-232 interface
  • Optical isolators in both the Transmit and Receive loops keep out electrical interference.
  • AC-powered, active or passive.


With front-panel LEDs, you always know the status of your data. The easy-to-use self-test feature checks the converter's internal circuitry.

Connect this converter to either a modem or mux. Just flip the switch to attach a terminal or computer. Your RS-232 devices are protected from dangerous transients, too.


  • Two LEDs monitor data flow.
  • DCE/DTE switch for easy direct connection no special cables needed.
  • Has built-in optical isolation on the receive pair.
  • Configure this AC-powered converter to match your system's 20-, 30-, or 60-mA Current Loop interface.
  • Interconnect a digital 20/30/60-mA unipolar Current Loop interface to an RS-232 interface