OTTO Speaker Microphone with High Low Volume Control Evolution

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OTTO's Evolution is a sealed speaker microphone with high low volume control.


  • Versatile and reliable speaker microphone for demanding environments
  • Sealed housing meets MIL-STD-810 including 40 mph blowing rain
  • Adjustable high/low volume control
  • 2.5mm accessory jack for use with earphone kit for loud environments or discreet communications
  • Built-in debris screen
  • Clothing clip assembly: 360° rotation with positive detent stops every 45°
  • Optional emergency button and antenna connect

Radio Manufacturers

  • EADS(Cassidian)/Nokia
  • E.F. Johnson
  • Harris
  • Hytera
  • ICom
  • Kenwood
  • Motorola
  • Sepura
  • Vertex/Yaesu

Recommended Markets

  • Construction
  • Manufacturing
  • Public Safety
  • Federal Agencies
  • Military

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