Proximity Sensor Smto-4U-Ps-K-Led-24 with Light Emitting Diode and Integrated Protective Circuit, without Mounting Kit. Design=Round, Authorisation=Rcm Mark, Ce Mark (See Declaration of Conformity) =To Eu Directive for Emc, Materials Note=Free of Copper and Ptfe, Measuring Principle=Magnetic Inductive, Festo