Safety light curtain, pair, cascadable, operating voltage 20.4.27.6 VDC, max. range 12000 mm, cable length 0.3 m, robust housing, protection class IP67, diagnostic display for status and error display, monitoring field height L: 1540 mm, optical alignment aid, no blind zone, range: 0.1...12 m, resolution: 23 mm, operating voltage: 24 VDC, automatic cascade configuration, no restart lock, safety light curtain type 4 according to IEC 61496-1 & 61496-2, category 4 Ple according to EN ISO 13849-1, SIL 3 according to IEC 61508 & SIL 3 CL3 according to IEC 62061, shock and vibration resistant according to IEC 61496-1