Reliable Alarming For Rising Or Falling Pressure; Compact Design Is Easy To Install; Numerous Configurations Available For Many Applications; Available With Cut Off Valve For Field Testing Of Switches; Tested And Certified To Be Reliable; Reliable Snap-Action Switch Resets Automatically ? No Manual Reset Is Required; The Single Pole Single Throw (Spst) And Single Pole Double Throw (Spdt) Switches Are Ul And Csa Listed; Switches May Be Applied On Systems Using Steam, Air And Other Non-Combustible Gases; Pressure Settings Can Be Factory-Set And/Or Adjustable By Equipment Manufacturer On Select Models; The High Electrical Rating Of The Snap-Action Switch Often Saves On The Need For Expensive Relays