Hermetic Switch, Inc. manufactures a variety of two part magnetic proximity sensors (sensor and actuator). All sensors feature hermetically sealed reed switch contacts that can survive harsh environments. Specially selected epoxy potting materials and rugged plastic cases withstand the impacts and forces of the real world. Many models are listed with Underwriters Laboratories, verifying that they have passed rigorous testing. The sensors are designed for use in alarm systems, automotive, consumer products, industrial controls, safety interlock, and many other applications. Leaded units have color coded leads for easy identification.