Schweitzer Engineering Laboratories

SEL designs and manufactures products and services ranging from generator to distribution automation and control systems.

High-Availability Computing and Communications for Harsh Environments. SEL serves industry worldwide through the design and manufacture of Linux and open-source tested computers for the most demanding applications and environments. For more than 30 years, SEL has provided industry-leading performance in products, services, local technical support, and a ten-year worldwide warranty.