Inductive proximity swiches namur sensors, magnetic hall effect position sensors used extensively in process machinery/instrumentation, machine tools, robotics, etc. These switches do not require any maintence and have virtually infinite life. The swiches are available in both ac and dc versions. The dc swiches can be used for direct switching of control relays, solenoids, counters, etc, or directly interfaced with electronic logic or plcs. Swiches are used for direct switching of auxiliary relays/contators, counters, or for direct plc interfaces, and conform to en standards and ip-67. These application in automated plants with plc interfaces.