SOR Industrial 66V1-AA3-N4-B1A Pressure Switch is an industrial-grade device from SOR Inc. with a 12–100 psi operating range, listed as new-old-stock (NOS) in catalog listings. The part belongs to the 66V1 family and uses an N4 wetted-diaphragm configuration with a B1A-style housing, a combination that aligns with documented 12–100 psi variants in SOR catalogs. Typically used to monitor pneumatic or hydraulic systems and provide a switch output when the sensed pressure reaches the setpoint.
