The BALLUFF BES 516-3008-G-E5-C-S49 (BES00K0) is a photoelectric sensor with Ø4×41mm dimensions, featuring a D4.0 housing style designed for flush mounting. It offers a 1.5mm sensing range with NPN normally open (NO) switching output, operating at 5000Hz frequency. Constructed with stainless steel housing and PBT sensing surface material.