SICK GTE6L-P3211 Photoelectric sensors. SICK GTE6L-P3211 is a photoelectric sensors in the G6 family. SICK identifies this exact configuration as manufacturer article 1117676. The official technical record specifies Functional principle: Photoelectric proximity sensor; Functional principle detail: Energetic; Sensing range min.: 0 mm; Sensing range max.: 450 mm; Reference object: Object with 90% remission factor (complies with standard white according to DIN 5033); Recommended sensing range for the best performance: 5 mm ... 400 mm. The linked SICK data sheet is specific to GTE6L-P3211.