E2B-M12KN08-M1-B1 Omron Inductive Barrel-Style Proximity Sensor, M12 x 1, 8 mm Detection. The E2B range of brass standard length cylindrical inductive proximity sensors from Omron are designed to offer reliable performance for use with in standard industrial environments. This range of inductive sensors have an easy-to-read code. They also have a bright circular LED indicator to allow for quick visual recognition of their operating status. These two features reduce the cost and time need to for maintenance.