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Item 5 Of 13
Airswitch Product, Style E121


Airswitch Product, Style E121

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  • Product Info
  • Literature


Resideo's Adjustable Pressure Switches have a variety of adjustment ranges and electrical load requirements for use in a variety of applications


  • Models available with compression or barb fittings
  • Automatic reset models feature SPDT contacts and manual reset models include SPST nc contacts
  • Electrical switch enclosed in metal box with cover
  • Reliable pneumatic operation, UL and CSA Listed, FM approved

Product Specifications

Dimensions (in.)
5.0 in. Diameter
Dimensions (mm)
127 mm Diameter
Electrical Ratings
278 Va @ 24Vac; 300Va @ 120 to 277Vac
Additional Features
Switching Differential: .02"±.01" wc @ minimum set point to approximately .80" wc @ maximum set point
Approvals, Underwriters Laboratories Inc.
Approvals, Canadian Standards Association
Electrical Connections
#6-32 Screw terminal with cup washers
Approvals, Factory Mutual
Ambient Temperature Range (C)
-40 C to +88 C
Ambient Temperature Range (F)
-40 F to +190 F
Connection Type
1/4 in. Compression
Pilot Duty Ratings
15 Amps resistive to 277Vac; 10 Milliamps @ 5Vdc; Gold Flash Contacts
.05"±.02" wc to 12.0" wc PR
Electrical Switch
Maximum Operating Pressure
1/2 psi