Kramer VS4228
8 Port RS-422 Matrix Switcher

OUR PART #  VS4228

The VS-4228 is a high performance bi-directional matrix switcher for RS-422 control signals. It can connect multiple ports to create from one to four bi-directional communications groups.

  • Control - Front panel, RS-232 (K-Router™ Windows® - based software is included), & RS-485.
  • Memory Locations - Store multiple switches as presets to be recalled and executed when needed.
  • Front Panel Control Lockout.
  • Standard 19” Rack Mount Size - 1U.


  • INPUTS/OUTPUTS: 8 in/out ports on DB-9 female connectors, fully compliant to TIA/EIA-422-B standard.
    RS-232 control via DB-9 female connector (RS-232 out on DB-9 male connector), RS-485 on terminal block assembly.
  • CONTROL: Manual with push buttons on front panel, RS-485 and RS-232 serial interface.
  • DIMENSIONS: 19"W x 7"D, 1RU High, rack mountable.
  • POWER SOURCE: 230VAC, 50/60 Hz, (115V U.S.A.) 10 VA.
  • WEIGHT: 4.88 lbs. approx. (2.2 kg)
  • ACCESSORIES: Power cord, Windows® - based control program.


  • Remote control of video and audio production studios.
  • Live broadcast remote control.
  • CCTV and other remote control applications
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