PCB Mount Pressure Switches

Printed Circuit Board (PCB) mount pressure switches are miniature single pole, single throw circuits used as pressure switches where moderate accuracy is sufficient. Pressure ranges: 6 IN.W.G. to 65 PSIG. Actuation point is customer specified and set at the Presair factory. Some models allow field adjustment.

custom options

Wide variety of options available to meet original equipment manufacturers product requirements.

high quality

Highly stable with good repeat accuracy. All switches are 100% tested at high & low settings & at proof pressure.

safe & economical

Remote operation with complete electrical isolation. UL Recognized. Costs less than conventional controls

made in u.s.a.

Presair switches are designed & manufactured in Eau Claire, Wisconsin U.S.A.

The printed circuit board (PCB) mount pressure switches are single function controls with internal electrical contacts designed to mount directly to a printed circuit board. These basic component switches feature momentary switching logic in a compact design to add pneumatic actuation to any electronic control circuit.

These versatile switches are a great choice for many applications due to their small size & variety of connection styles. Although these switches are built to connect to a printed circuit board, they can also be retrofittted for nearly any application by connecting wire leads. These switches can sense a pressure ranging from 6 inches of water all the way up to 65 PSI. For a frame of reference, a trumpet player blows 55 inches of water (or 2 PSI) on average, so these switches have a broad range.

  • Variety of mounting & air connections available
  • Factory set pressure range of 6 inches of water to 65 PSIG. Some field adjustable models available.
  • Differential Pressure Sensing Available
  • Single Pole, Single Throw Circuit. DPST models available.
  • UL / cUL Recognized

Part Number Configurations

Here is a complete list of part number configurations already listed in our catalog. Click on a part number below for more information.

Other custom part number options are available. Please contact us with your requirements for more information.

Mounting Options & Air Connections

Presair switches have a variety of mounting options and air connections available to meet the needs of original equipment manufactures.

Click one of our readily available solutions below, or send a request for a custom option to

Low Profile Radial Mount with 1/8″ O.D. Side Air Spout
Low Profile Radial Mount with 2 1/8″ O.D. Side Air Spouts (Differential Pressure Sensing)
1/8″ NPT
9/16″-18UNF Threaded Mount with 1/8″ O.D. Center Air Spout

Common Applications

Presair’s printed circuit board mount pressure switches are commonly found in medical & industrial applications.


Cross Reference

We are certain of our position at the top so we’re comparing our product with other top products in the marketplace today.

Find further details by visiting   this link.



C Series


6761 & 6763 Series


PSW23 Series



PCB Series

Variety of Mounting & Air Connections

6″ of H2O – 65 Psi


Max. Operating Pressure = 160 Psi

1 Amp @ 250VAC

UL / cUL Recognized

Made in USA

Frequently Asked Questions


What is a printed circuit board (PCB) mount switch?

A PCB switch is a type of electrical switch that connect directly to a circuit board, and upon actuation at a specified range it turns on/off the application system it is connected with. Wire leads are also available for other applications where the PCB switch’s compact design is necessary.

Do you offer a double pole, single throw (DPST) PCB switch?

Yes. Contact our customer service team here for more information.

My application will expose the switch to hazardous chemicals and/or gases. How will the switch perform?

We offer a variety of diaphragm material options to meet different application needs.  Here’s a guide to the different options available.

What do you mean by PSI rising / falling?

Pressure switches are measured by inches of water, or PSI. Once the switch rises or falls the contacts will open and close based on the hysteresis, or deadband.

Read a more   detailed explanation here.

What’s the difference between a pressure and vacuum switch?

Pressure switches push against the diaphragm & plunger inside the switch versus a vacuum switch pulls the diaphragm away from the plunger inside the switch. Another way to think of vacuum switches is a negative pressure switch.   Here’s an illustration to help!

Request A Quote

Complete the form below with your application information, and a product specialist with follow up with you in 1-2 business days.

    Your Name (required)

    Company Name (required)

    Telephone Number (required)

    Your Email (required)

    Sign up to receive email newsletters and marketing materials.


    Your Message

    Call Now