OEM Mechanical Pressure Switch with Relay or Alarm | Omega
Series EWDP | Wireless Communications Adjustable Differential Pressure Switch used to monitor pressure, vacuum, and differential pressures. | Dwyer Instruments
GamaTech Pressure Switch for Water Pump and Air Pump, Digital Adjustable Pressure Controller, 110V, 0-145 Psi, 1/2" Male Npt - Walmart.com
Amazon.com: Stainless Steel 1/8 Inches Pneumatic Adjustable Pump Pressure Switch QPM11-NO Normally Open : Tools & Home Improvement
Adjustable pressure switch - 297-0052 - RS PRO - electromechanical / IP65 / for hydraulic applications