C&K’s MPSR series of magnetic sensors are designed for non-contact position and proximity detection in tough dirty environments.

The 61mm long housing is aluminium with a stainless steel cable, and operating life is 4 million actuations in spite of dirt, dust, oil, grease and water, according to the company.

The switches are electro-mechanical, with Form C (change-over) switching providing two outputs that can be toggled to offer additional feedback. Inside, the sensor is a nitrogen-filled reed switch with rhodium coated contacts.