SOR pressure switches are field-proven, low cost process instruments for use in either primary or redundant pressure applications in a wide variety of industries. Even though the technology is proven by the original Static “O” Ring mechanical switches that set industry standards more than 50 years ago, we continue to expand our product offerings to meet changing industry needs. SOR pressure switches are designed and offered with a number of agency approvals, housing enclosures and switching configurations to meet the demands of global markets. The large selection of product components provides the optimal instrument specifications to handle the toughest of applications.