bircher reglomat
 
  Airwave sensing edges offer a simple, robust, and reliable solution for safety in a wide variety of applications, including industrial doors and mass transit.

When the rubber extrusion is compressed, the internal pressure increases which creates a pressure wave impulse. This impulse is transmitted through a connecting hose to the airwave switch.
 
     
motion & presence sensors - ph: 847 952 3730 - copyright © 2007 Bircher Reglomat