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Performance Under Control™

System 4® Controller

With greater functionality and unprecedented efficiency, Rytec’s next-generation System 4® door controller takes performance to a whole new level. 

The new System 4® is faster, smarter, smaller and easier to install than other high-speed door controllers. The intelligent processor and variable frequency drive generate an energy-efficient speed curve for smooth motion, soft starting and soft stopping.

  • Fast and smoother operation with full control of speed adjustments.
  • Three simple buttons enable total digital control of all door functions, parameters and positioning.
  • UL/cUL listed controller and complete assembly in a NEMA 4X enclosure.
  • Easy to read vacuum fluorescent display provides scrolling messages and easy to understand instructions.


  • NEMA 4X Polycarbonate Plastic Enclosure
  • 208VAC, 230VAC 1-Phase or 3-Phase or 460VAC 3-Phase Power
  • Variable Frequency Drive
  • Absolute Encoder
  • Low-Voltage Color-Coded Terminals


  • 575 Volt / 3-Phase Power
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See the System 4® Door Controller in Action

Performance Under Control

Document Resources

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