Laser Receiver

This product is used to recieve any Laser light beam that has been modulated by a signal.Modulation means that the Laser beam is being switched  on and off or is being changed in intensity very rapidly by another signal superimposed upon it. A He/Ne Laser or Laser Diode source can be modulated by an external signal  or microphone and the beam of light can be recovered and can be either displayed to an oscilloscope or heard through the integral speaker.