SICK GTE6-N1211 Photoelectric sensors. SICK GTE6-N1211 is a photoelectric sensors in the G6 family. SICK identifies this exact configuration as manufacturer article 1050713. The official technical record specifies Functional principle: Photoelectric proximity sensor; Functional principle detail: Energetic; Sensing range min.: 10 mm; Sensing range max.: 300 mm; Light source: PinPoint LED 1); Type of light: Visible red light. The linked SICK data sheet is specific to GTE6-N1211.