IME08-04NNOZW2S is a part number from Sick, a company that manufactures sensors, motion control, safety systems, industrial automation and vision systems for a variety of applications. This particular part number refers to an inductive proximity switch for detecting metal objects. The switch is 8 mm in size, has an operating range of 4mm, and is an NO/NC (Normally Open/Normally Closed) type. It is rated for up to AC 30V, 2A and DC 30V, 0.5A.