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  • Manufacturer:
  • Newark Part No.: 20M3546
  • Manufacturer Part No ADAM-4520-D2E

Product Information

  • Convert From: RS232
  • Convert To: RS422/485
  • SVHC: To Be Advised


The ADAM-4520/4522 converter lets you take advantage of RS-422 and RS-485 on systems originally equipped with RS-232. It transparently converts RS-232 signals into isolated RS-422 or RS-485 signals. You do not need to change your PC's hardware or your software. The ADAM-4520 lets you easily build an industrial grade, long distance communication system with standard PC hardware. It extends the communication distance by 4000 ft. (1200 m) or increases the maximum number of connected nodes by 32.


  • Automatic RS-485 data flow control
  • 3000 VDC isolation protection
  • Surge protection RS-485 data line
  • Transmission speed up to 115.2 Kbps
  • Reserved space for termination resistors
  • Power and data flow indicator for troubleshooting
  • Power requirement: +10 to +30 VDC
  • Mounts easily on a DIN-rail, panel or piggyback


  • Industrial
  • Communications & Networking

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Can the digital I/O module (part number ADAM-4055-BE) works without RS-232 to RS-422/485 converter (part number ADAM-4520-D2E)?
3 years, 1 month ago
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The part number ADAM-4055-BE can be commanded with any device which provides RS-485 protocol. The most important thing is that the device has to have the flow control that can help to switch back and forth between listen and send commands. Usually, there is only RS232 COM port for most of the PC, so it needs RS-232 to RS-485 transceiver ADAM-4520-D2E from Advantech.
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