We engineer custom sensors for the world's most critical missions. Let us engineer yours.
Intensely engineered, high-voltage reed switches. How many volts can we help you handle?
Fluid processing sensor packages. Powerful, reliable, and made-to-order.
Off the shelf or custom engineered...yeah, we've got a switch for that.

Custom Engineering

custom engineering

Your project is full of possibility. But to make it work, you need a custom-designed sensor at the leading edge of its capability. You need HSI Sensing.

Reed Relays

reed relays

HSI's comprehensive, fully customizable line of reed switches are better suited for relay manufacturing than any others in the world.

Making Sense

making sense blog

Subscribe today for late-breaking insights and discoveries about sensing technology, from the guys who know it better than anyone.


HSI Sensing

HSI Sensing is the innovative leader in the engineering, design, and precision manufacturing of custom reed switch and sensor technology. The industry experts at solving problems for customers in challenging design applications, we also precision manufacture those solutions for consistent, unmatched quality.

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News Center

HSI Engineering Team Shares Its Expertise

03/25/2014
HSI Engineering Team Shares Its Expertise
HSI Sensing has launched a knowledge sharing initiative in the form of an engineering blog entitled “Making Sense.” Read More

HSI Sensing’s Free 3D Files Cut Design Time

12/15/2013
HSI Sensing’s Free 3D Files Cut Design Time
HSI Sensing has made 3D model files of their industry-leading reed switches and proximity sensors available for free download from their website. Read More