Model consisting of a transmitter module with red laser diode, a receiver module with integrated photodiode, and a fiber optic.

Transmitter module:

• Rotary selector for choice of sources:
  - Ø 3.5 mm jack input for sound source (microphone, MP3 player, ...)
  - BNC socket input for GBF - TTL signal for test (requiring no other device)
  
• 1 mW red laser diode (class II)
  
• Fiber optic adapter
  
• Rod Ø 10 mm for use on bench or optical stand
  
• Power supply unit (supplied)
  
• Rubber feet
  Receiver module:
  
• Rotary potentiometer for adjusting the sound volume
  
• 3.5 mm jack output for connecting a loudspeaker
  
• BNC socket output for signal visualisation on the oscilloscope
  
• Photodiode
  
• Fiber optic adapter
• Ø 10 mm rod for use on bench or optical stand
  
• Power supply unit (supplied)
  
• Rubber feet
  Comes with 50cm of bare fiber optics (Ø2mm)