The BES517351NOC03 proximity switch features a compact design with dimensions of 30 x 10.5 x 16.5 mm, suitable for flush mounting applications. It offers a sensing range of 2 mm with PNP normally closed (NC) switching output, operating at a frequency of 2500 Hz. The housing is constructed from durable PBT material with GF20 reinforcement, ensuring reliable performance in industrial environments.