AX-500PLUS. Built to take the worst. With over 14kV surge protection, impact resistant covers, and more than 99% beam tolerance, these detectors withstand the most severe environmental conditions. Extra large dual beams are used to provide the greatest protection against false alarms caused by birds, falling leaves, and other disturbances. These beams have everything you need for a quality installation, including a form C relay and Conduit knockouts, as well as optional heaters, back covers, and beam towers.

Product Rating: (5.00)   # of Ratings: 1    Sort: New to Old RE-SORT REVIEWS: Helpful to Less Helpful Less Helpful to Helpful New to Old Old to New High to Low Rating Low to High Rating Showing comments 1-1 of 1 1. Anonymous User on 6/7/2009, said: I hav e worked in the Government security World for 30 years. This is a great system and works right the first time. covers over 500 feet and simple to install - just follow the directions.. I hav e two sets and will buy more. Was this comment helpful? yes no   (0 people found this comment helpful, 0 did not) Showing comments 1-1 of 1