Designed to continuously learn and adjust to changing weather and terrain conditions while monitoring and protecting an outdoor zone, Radiy-2 detectors operate 24/7 in open field conditions and will protect a zone ranging from 30 to 650 feet long with a beam of between five and 16 feet wide. Radiy-2 detectors perform in temperatures ranging from -58 to 149 degrees Fahrenheit. In addition, Radiy-2 Series Detectors are capable of detecting people walking and crawling at 0.3 to 10 yards per second with an extremely low false alarm rate. Find out more at www.strsecurity.com