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SMD - Sensative Air Differential Switch

SMD - Sensative Air Differential Switch

  • $56.07

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.



Please call for information on specifications not listed here.


All switches are CSA and ULC Approved, models are also FM Approved where specified.

There are three standard Pressure Ranges:

  1. 0.17" to 1" WC (4-25mm) SMD 8021202103
  2. 0.17" TO 6" WC (4-152mm) SMD 8021203090
  3. 0.17" TO 12" WC (4-304mm) SMD 8021206021

There are three standard Connection types:

  1. Compression Fitting
  2. 1/8" NPT
  3. 1/4" Hose Barb


  • Sensitive diaphragm
  • Snap-action electrical switch, S.P.D.T. rated at 10 amps
  • Cost-effective pricing
  • Custom design per OEM specifications available, please call or email to inquire. 


Technical Literature:

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