Retired products


4132B, 4185A

Miniature data modems


These miniature data modems transport an RS-232, RS-422, or RS-485 data signal on a pair of fibers. Available in multi-mode and single-mode versions, they are packaged in a DSub connector-size package.


  • Miniature data fiber modems
  • RS-232, RS-422, and RS-485 versions available
  • Optically interchangeable for converting one data typeto another
  • Optically compatible with most Optelecom® drop and insert data modems