SICK WTB16P-1H161220A00 Photoelectric sensors. SICK WTB16P-1H161220A00 is a photoelectric sensors in the W16 family. SICK identifies this exact configuration as manufacturer article 1218820. The official technical record specifies Functional principle: Photoelectric proximity sensor; Functional principle detail: Background suppression, NarrowBeam; Sensing range min.: 10 mm; Sensing range max.: 500 mm; Adjustable switching threshold for background suppression: 100 mm ... 500 mm; Reference object: Object with 90% remission factor (complies with standard white according to DIN 5033). The linked SICK data sheet is specific to WTB16P-1H161220A00.