with Adaptive Real-Time anti-mask surveillance 18 m wide angle with look down zone or 25 m continuous curtain (optional) Fully digital Visatec II signal evaluation True temperature compensation Three-stage white light filter with triplex black mirror optics Versatile application. A unique combination of maximum detection reliability and im-munity to false alarms make the IR270CT ideally suited for use in a wide range of ap-plications, including commercial and industrial premises and public buildings. Anti-mask surveillance. The IR270CT is protected against accidental or sabotage masking. It is monitored for anything that has an influence on this circuitry, e.g. spray, foils, hats, boxes, coats, etc.. Outstanding immunity. A comprehensive protection concept makes the detector insensitive to environmental problems. Safe detection. A look down zone for crawl protection, and uniform sensitivity in the 'chessboard' zone pattern guarantee a high level of detection reliability. The multi-criteria signal analysis system differentiates intelligently and reliably between intruders and disturbance signals. > Siemens Building Technologies size="-1">