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Potential Ice Build-up


Weather Cap protection

  • Every AST switch comes sealed as a standard.

  • Our motor is inside the aluminum switch head between 2 seals so no moisture can penetrate.

  • Every AST switch is tested under water.

  • For extreme weather conditions, we offer a "Weather Cap" to protect the manual override from the harsh environment. The switch remains sealed even after the cap is removed.

Other Manufacturers

  • Offer sealed and unsealed versions of their switches. 

  • Use a plastic "can" to cover & seal their switch & manual override. In order to operate the switch manually, you need to remove the protective cover, exposing the motor to the environment (rain, snow) and potentially damaging the motor. 

All AST switches come with many standard features.  What sets us apart from the competition?



  • Our switches never lose pressure, even with the optional weather cap removed.

  • When dry air is injected into your system, it permeates into the cavity where the microswitches are housed and keeps all contacts dry. 

  • AST switches can work in 100% humidity.

  • Our switches are Blue Anodized, not painted, for better heat reflection and durability.

  • Quick turnaround.

  • Our switches come with a 3 year limited warranty. 

  • Online shop for convenient ordering and order tracking.

  • All AST Switches are RoHS compliant.

  Waveguide Products

  • Many sizes of Flexible Waveguide in stock ready to ship.

  • We are a "one stop shop" for all your waveguide needs, no need to source different vendors.

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