Inductive sensor NJ4-12GK-SN-15M, Switching function, Inductive Sensors, 4 mm non-flush, Usable up to SIL 3 acc. to IEC 61508, Degree of protection IP68, ATEX-/IECEx-approvals for zone 0/1/20/21 (Ex i), ATEX-/IECEx-approvals for zone 2/22 (Ex ec/tc), 15 m connection cable, 5 meter connection cable