Antunes SMD Air Pressure Switch

  • Sensitive diaphragm
  • Snap-action electrical switch, S.P.D.T. rated at 10 amps
  • Custom design per OEM specifications available



The SMD is a sensitive air differentiator that is compact, easy to install, accurate, and reliable. Made of sheet metal, this switch monitors positive, vacuum, or differential air pressure.

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UL, UR, CSA and FM

Technical Documentation

SMD Technical Documentation