SICK GTE6-P7231 Photoelectric sensors. SICK GTE6-P7231 is a photoelectric sensors in the G6 family. SICK identifies this exact configuration as manufacturer article 1113824. The official technical record specifies Functional principle: Photoelectric proximity sensor; Functional principle detail: Energetic; Sensing range max.: 30 mm ... 900 mm; Sensing range: 40 mm ... 760 mm; Light source: PinPoint LED; Type of light: Visible red light. The linked SICK data sheet is specific to GTE6-P7231.