Sennheiser SI30 2-Channel IR Conferencing Wireless Radiator

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  • Regular price $329.95
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The Sennheiser SI 30 is a wideband IR modulator with an integral radiator. It can be switched between operation on Channel 1 (2.3 MHz), Channel 2 (2.8 MHz) and stereo operation.

The compact size and relatively low radiating power of the SI 30 modulator/radiator and its companion SZI 30 radiator offer an affordable and practical solution for use in smaller or medium-sized conference rooms, or for applications requiring audio transmission to well-defined zones, in public spaces such as museums, aquariums and galleries.

Note! AC adapter sold separately.


  • Ultra-lightweight, compact IR radiator and modulator/radiator for 2.3/2.8MHz carrier frequencies in conference rooms and museums
  • Easily installed and precisely aligned
  • Small footprint for multi-unit setup in smaller spaces
  • Cost-effective conferencing and multi-room solution


  • Type: IR FM Modulator/Radiator
  • Frequency Range: 2.3 MHz, 2.8 MHz selectable
  • Transmitting Frequency Range: 21,000 ft2
  • Impedance: 50 Ohm (output)
  • Sensitivity: Not Specified by Manufacturer
  • Maximum Input Power: 4V
  • Connectors 
    • 1/8" Mono Mini
    • 1 x 3-pin Texas-Socket
  • Dimensions (WxDxH): 4.6 x 1 x 3.5" (118 x 25 x 90mm)
  • Weight: 4.9 oz (140g)