fbpx

Hermetic Switch

Our Story

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.

Three Generations Strong

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.

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.

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.

    Contact Us

    Contact us or give us a call to discover how we can help you with our services, products and company partners.








    Do NOT follow this link or you will be banned from the site!