We’re a Team of Passionate Thinkers, Creating Motion for Over 50 Years

Simply put, we are a company that produces sensor products. But, we are much more than that – we are the catalyst that helps drive innovation in any and every industry by helping to transform mechanical motion into electrical signals.

We Are A Family Business

William Posey wasn’t just an entrepreneur. He was an engineer. And he didn’t just start a company. He pioneered a technology–one that over the years has made a lot more technology possible. HSI products can now be found in everything from pacemakers to pilot ejection seats; from security systems to space stations.
The reed switch that Posey helped perfect has evolved over four decades—we’ve made sure of that. But it’s still one of the safest, greenest and most responsive sensing solutions in the world. William Posey pioneered it, and under the leadership of his grandsons, Ryan and Travis Posey, HSI Sensing continues to perfect it every day at our growing 55,000-square-foot facility in Chickasha, Oklahoma.


5 Decades

Serving You for Over 50 Years


SIA Winner

Intrusion Detection and Prevention Products



Reed Switches, Sensors & More

Customer Service and Product Excellence are the Core Drivers in Everything We Do

We Are Solution Centered

At HSI, we work daily to elevate the status quo and develop next-generation custom solutions for a wide range of industries. Where others say something can’t be done, we see the opportunity to innovate.

We Strive For Excellence

Our products set the bar for our industry with solutions that remain unmatched, 50 years strong. At HSI, only the best will do for our customers.

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Standing Together, Giving Back

HSI Sensing is dedicated to supporting the growth of our industry and the customers we serve worldwide, and we bring that same dedication to our local community. So whether it’s stocking food pantries, collecting for the Salvation Army, delivering local toys and more, the HSI Team will always seek to do right by our neighbors.

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HSI Sensing is a proud supporter of FIRST (For Inspiration and Recognition of Science and Technology), whose mission is “to transform our culture by creating a world where science and technology are celebrated and where young people dream of becoming science and technology leaders.”

Ryan Posey

President, HSI Sensing

Let’s Make Things Happen

Simply reach out to connect with us. We’ll discuss your project and provide solutions, unique to your specific needs.

“We are constantly looking to reimagine the way we use sensor technology in our everyday lives. Whether our engineers are looking at a chemical processing plant, a fighter jet or a pinball machine, we are imagining the way that we can use our products to make those technologies better.”

Ryan Posey

HSI Sensing, CEO

Full Product Catalog

Switches, Sensors and More
(405) 224-4046
(405) 224-4046
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