Industrial RS-232/485/422 to Multi-Drop Fiber Optic Converter

  • Supports fast ring network redundancy protection & functionality.
  • PCM pulse code modulation technology combined with digital phase-locked loop clock extraction technology.
  • Serial protection circuit, hot-swappable.
  • Serial access node greater than 128.
  • Smart electrical interface, no dial settings (Auto detect).
  • Exact status indication, LED light alarm, for easy maintenance and troubleshooting.
  • Rugged Design with full surge protection
  • Certified for Power Station, Sub-station and Switchgear usage.
  • 5 Year Warranty



The DY-5546S Single-Channel Dual-Loop Self-Healing. Fully Redundant Ring – industrial, serial to optical transceiver. It is a low-cost serial data transmission communication device with dual-ring self-healing function that can adapt to industrial environments. It can form a chain network or a dual-loop fiber network for the transparent transmission of one RS-232/RS-485/RS-422 signal on the fiber ring network. Provides superior opto-isolation.



DY-5546S Datasheet 468.00 KB 12 downloads


DY-5546S Manual 1.03 MB 14 downloads


Additional information

Weight 0.6 kg
Dimensions 20 × 8 × 15 cm