SICK IME18-20NPSZW2S Inductive proximity sensors. SICK IME18-20NPSZW2S is a inductive proximity sensors in the IME family. SICK identifies this exact configuration as manufacturer article 1071273. The official technical record specifies Housing: Metric; Standard design; Thread size: M18 x 1; Diameter: Ø 18 mm; Sensing range S n: 20 mm; Safe sensing range S a: 16.2 mm; Installation type: Non-flush. The linked SICK data sheet is specific to IME18-20NPSZW2S.