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Items marked "Oversized Ships via Truck" DO NOT SHIP FREE & we will contact you with shipping rate.

Response Opto-Box

by ETC
Found it cheaper? We will Price Match
Customer Service: (800) 245-6630

The ETC Response Opto-Splitter provides quality and reliable DMX data distribution. Using industry-standard DMX and RDM, the Response Opto-Splitter unlocks the power of your DMX system.


  • Multi-port DMX splitter with DMX-in and DMX-thru
  • Optically isolated DMX512 ports
  • Supports Remote Device Management (RDM) Protocol
  • DIN rail and rack-mount versions
  • Power and DMX presence status indicators
  • Supports update of connected ETC fixtures


  • Road/receiving houses and touring
  • University/professional theatres
  • Hotels and Convention halls
  • System integration
  • Houses of worship
  • House lighting
  • Museums
  • Themed environments



  • No configuration required
  • Supports DMX512, DMX512 (1990), and DMX512-A
  • Supports ANSI E1.20 Remote Device Management (RDM)


  • Rack-mount form factor:
    • Fabricated from aluminum
    • Black, Fine-textured, powder-coat finish
    • Full 19” equipment rack width
    • Front or rear facing mounting options
  • DIN rail form factor:
    • Molded plastic enclosure
    • Mounting complies with DIN43880 (35/7.5 rail)
    • Unit is 9 DIN units wide
    • DIN installation enclosure available
  • Power and data activity LED indicators
    • Blue power indicator
    • Green DMX activity indicator


    • Ambient operating temperature: -10° to 65°C (14° to 149°F)
    • Operating humidity: 5% - 95% non-condensing
    • Storage temperature: -40° to 70°C (-40° to 158°F)


  • Supports DMX input and DMX thru
  • Provides optically isolated DMX/RDM outputs
  • Rack-mount form factor:
    • 100-230VAC power input
    • User configurable front or rear power position
    • 35W max power draw
    • XLR, RJ45 and Terminal connector options
  • DIN rail form factor:
    • 12-48VDC power input
    • 8W max power draw
    • Wiring connections use pluggable rising clamp terminals

Planned Regulatory and Compliance

  • cETLus Listed
  • CE compliant
  • EAC certified
  • RoHS compliant
  • WEEE