Piezo keyboards

Piezo keyboards are made of plastic or metal plate. Integrated piezo elements provide a voltage pulse when pushing the the button. These panels are ideal for rough applications like industrial instruments, parking machines, marine instruments. The structure of the piezo keyboard is simmilar to the traditional membranekeyboard but it's without tactile feedback.
 
Properties

  long lifespan
  no tactile feedback
  robust (vandal proof)
  customer-specific design
  Special electronics needed.