supply voltage 10 - 30 VDC does not need an evaluation unit operating range: 6 m (opening angle 20° max. ambient light: >100000 Lux enclosure rating: IP67 temperature range: -20 ... +65 Through beam light sensor is well-known in the market as a high-quality, inexpensive through-beam sensor. There are various applications involving the Through beam light sensor (also well-known as a photo cell) in which individual or dual light curtain systems are utilised. Dual light curtain systems are often installed to ensure the safety of automatic doors. The evaluation unit of a Through beam light sensor system can optimally analyse one or two light beams