Call Us (405) 224-4046 · info@hsisensing.com

The smallest switch
with the biggest job.

We turn motion into signal. HSI engineers hermetically-sealed reed switches and sensors trusted in aerospace, medical and the harshest industrial environments on earth — down to the world's smallest reed switch.

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Standard Products
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Precision Manufacturing
GLASS CAPSULE · hermetic seal
FERROUS REEDS · contact < 1ms
MODEL HSR-0025R · world's smallest
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Certified & Trusted
AS9100D ISO 9001:2015 UL 634 Level 2 RoHS CMMC L2 C3PAO
High-Performance Products

Three ways to get the exact part your design demands.

From catalog parts shipping in 48 hours to fully bespoke sensors co-engineered with our team — every switch is built to the same uncompromising standard.

Reed switch — product shot
01 / STANDARD

Standard Products

Over 1,500 ready-to-ship reed switches and sensors, engineered for an array of applications and available off the shelf.

Form A / B / CØ0.9mm–5mmShips in 48h
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Modified switch — product shot
02 / RAPID

Rapid Solutions

Slight modifications to proven standard products: surface-mount bars, laser engraving, custom housings and fit applications.

SMD optionsLaser markedCustom leads
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Engineering — bench photo
03 / CUSTOM

Custom Solutions

When a standard part won't do, our engineering team designs a switch or sensor to your exact electrical and dimensional spec.

Co-engineeredFAIR / QualAny environment
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Industries We Power

Reliable where failure isn't an option.

From the chemical plant to the fighter jet to the pinball machine — our switches show up in the places that demand absolute consistency.

Sometimes, only a custom solution will do.

Tell us what you need to sense. Our engineering team will help define the part from the first conversation.

Start a Project (405) 224-4046