Presair
Pressure Switches
Presair pressure switches make electrical contact when a certain set pressure has been reached on its input.
By providing on/off switching from a pneumatic source, Presair pressure switches deliver critical benefits:
custom options
Contact our Customer Service Team at info@senasys.com for customized component options.
high quality
Highly stable with good repeat accuracy. All switches are 100% tested at high and low settings and at proof pressure.
safe & economical
Remote operation with complete electrical isolation. UL Recognized. Costs less than conventional controls
made in u.s.a.
Presair switches are designed & manufactured in Eau Claire, Wisconsin U.S.A.
Talk to a product specialist today!
Pressure Monitoring
Welcome to the perfect notification product for monitoring pressure! This simple external solution features a light (optional audible alarm) that’s designed to grab the attention of qualified personnel anytime pressure is rising too high or falling too low in a system. Prevent and fix issues before they cause significant downtime!
Tinytrol Factory Set Pressure Switch
Tinytrol pressure switches provide versatile and convenient sensing. Their miniature size and variety of connection styles for simple implementation into any system. These switches allow for simple electrical on/off control over pressure. As pressure rises or falls, one contact opens as the other closes. These pressure switches are factory set from 0.25 inches of water to 65 PSIG.
Adjustable Pressure Switch
Presair’s adjustable pressure switch is field adjustable from 1.5 inches of water to 125 Psi. The adjustable range is 10% to 25% lower on falling pressure, although special differentials are available. Dual pressures switches available and can be factory set to allow each snap action switch to operate at a different pressure setting.

Sensitive Differential Pressure Switch
Presair’s sensitive single pole switches can be adapted to pressure or vacuum switches, or as differential pressure switches. These switches are field adjustable or can be factory set from 0.25 inches of water to 35 inches of water.
PCB Mount Pressure Switch
Printed circuit board mount pressure switches are miniature single pole and double pole switches used as pressure switches where moderate accuracy is sufficient.