The IR 466 designed specifically for long range, wide-area intrusion detection. The detector features telescopic-like heated precision mirror glass optics, a robust silicon wafer window and three independent detection zones (left, medium, right). It features an operating temperature range starting at minus 40 deg Fahrenheit, RS 485 databus connectivity and a mounting height of up to 13 feet, minimizing the risk of vandalism. ASIM Technologies Inc.