"Non-contact safety sensorFor use on sliding, hinged, or removable machine guards or on articulating robot arms Designed for Food Processing, Pharmaceutical, Medical Equipment, Marine, Construction Equipment & Outdoor and other washdown applications Pulse Echo operation principle: • can only be actuated with matching CST actuator target (Sold separately) • sensors emit electromagnetic pulses that are returned by the actuator • proximity and coding of the actuator is evaluated to indicate closed guard door • no mechanical wear on componentsThreaded cylindrical stainless steel enclosure (1.18\" dia x 3.5\") Can be flush mounted IP69K ingress protection rating for high pressure\/high temp wash down applicationsInternal electronics monitor safety outputs and continually test internal functions. Meets PLe to ISO 13849 or SIL3 to IEC 61508, independent of safety controller.2 PNP type safety outputs, with either 1 diagnostic or serial diagnostic output LED status indicator Can be wired in series without loss of safety category M12 connector","Safe Solutions for your Industry.Schmersal is focused on machine safety - protection for man and machine. For over 65 years Schmersal has developed a reputation for the design and manufacture of machine safeguarding switches that satisfy current safety requirements of the latest OSHA, ANSI, RIA and international standards and guidelines. Products supplied by Schmersal are used in a wide variety of applications in industries such as power presses, packaging, automotive, food and beverage, pharmaceutical, elevators, machine tools and heavy industry."