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This article was originally published on August 15, 2022, and updated on May 19, 2025. Pressure switches are essential components in a wide range of industries and applications. From maintaining safe operation in burners and boiler systems and monitoring hydraulic pressure in industrial machinery, to controlling pump systems in water treatment facilities and ensuring safety in chemical and petrochemical equipment—pressure switches are everywhere. However, be aware that various factors can affect the performance of your pressure switch in certain applications. Selecting the appropriate microswitch is a minor yet crucial step to guarantee consistent and accurate readings. Read this article to learn about the different microswitch options available and the applications for which they are best suited. You will also see links to additional resources that can help deepen your knowledge about pressure switches and how they are used.