Amazon.com: mankk Air Pressure Switch 70-100 PSI Thread 1/4"NPT 24V 12V DC Air Compressor Pressure Switch for Air Horn Train 70-100-1/4"NPT-W : Automotive
Pneumatic and Hydraulic Pressure Switches Discontinued Product
Pneumatic Pressure Switch MPS|Mindman Pneumatics
Amazon.com: Stainless Steel 1/8 Inches Pneumatic Adjustable Pump Pressure Switch QPM11-NO Normally Open : Tools & Home Improvement
Diaphragm pressure switch - TP - IMI STI - for air / for pneumatic applications