Digital Adjustable Hydraulic Oil Pressure Switch 12V Air Pressure Switch - China Adjustable Water Pressure Switch, Hydraulic Oil Pressure Switch | Made-in-China.com
Dreyoo 40-80 PSI Water Pressure Pump Pressure Switch Assembly for 12V 24V 110V 115V Water Pump, Adjustable Pressure Switch Replacement Kit Compatible with Most Brands of Water Pumps - Amazon.com