Series MVS | Miniature Vacuum Switch is a compact, lightweight, and adjustable which is designed for OEM applications. Other applications include HVAC, dairy systems, medical, office equipment, and pump control. | Dwyer Instruments
Vacuum Switch • Airtrol Components Inc
St Croix Pressure/Vacuum Switch: Amazon.com: Industrial & Scientific
VSM - Adjustable vacuum switches with SPDT contacts and adjustable hysteresis - Elettrotec