The BALLUFF BES M12MI-NSC40B-BV02 is an inductive proximity sensor with dimensions of Ø12 x 53 mm, featuring an M12x1 threaded housing for flush mounting. It offers a sensing range of 4 mm with NPN normally open (NO) switching output, operating at 2500 Hz frequency. Constructed with brass housing and nickel-free coating, this sensor provides reliable detection capabilities.