We Make Reed Switches

HSI Sensing’s reed switches feature the highest range of sizes, unique switching capabilities, quality and life expectancy on the market.

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A Global Reed Switch Manufacturer

We make the world’s smallest Form A switch, the world’s smallest Form C switch, the only switches with solid tungsten contacts, high voltage switches, RF switches, pressurized switches, and now the only true Form B switch.

World’s Smallest Form A

HSR-0025R is the world’s smallest and most magnetically sensitive reed switch. It’s pick-and-place capable, not ESD sensitive and provides extended operations in extreme environments.

World’s Highest Voltage

HSI’s quality line of high power, high-voltage reed switches, including the HSR-910W (the world’s highest voltage reed switch), are engineered for the unique demands of fluid processing applications.

Below is just a sampling of our 1500+ products to choose from with various options available for customization, including switching and range. All HSI products can be modified to your specifications.

HSR-0025R

Contact Form A that features a glass length of 4.06 mm. Switching voltage 30 VDC, Switching current 0.1.

HSR-502R

Contact Form C that features a glass length of 7.75mm. Switching voltage 30 VDC, Switching current 0.1.

HSR-042R

Contact Form A that features a glass length of 9.14mm. Switching voltage 100 VDC, Switching current 0.2.

HSR-910W

Contact Form A that features a glass length of 49.78 mm. Switching voltage 6000 VDC, Switching current 3.

HSR-130R

Contact Form A that features a glass length of 31.24mm. Switching voltage 150 VDC, Switching current 1.

HSR-376R

Contact Form B that features a glass length of 9.4mm. Switching voltage 36 VDC, Switching current 0.1.

HSA-12100

Contact Form C that features a glass length of 32.64mm. Switching voltage 2500 VDC, Switching current 3.

HSA-12115

Contact Form C that features a glass length of 32.77mm. Switching voltage 50 VDC, Switching current 2.

HSR-370R

Contact Form C that features a glass length of 11.94mm. Switching voltage 30 VDC, Switching current 0.1.

Reed Switch Guide

  • Download our full line of reed switches and proximity sensors.

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
  • Download our catalog that features over 1,500 products.