The microwave and active infrared signals are received and processed individually. The activation of the alarm signal comes as a result of precise synchronizations and sophisticated coordination between the two technologies.
Microwave is the signal that functions as the “activator” because it is usually activated first. Its detection capacity is determined by a Fresnel zone that can be regulated with its own trimmer, up to 19 feet in diameter.
Infrared sensors are incorporated inside each column. Each set of beams has its own receiver and transmitter which form a quad multiplexed beam-per-sensor offering the added advantage of greater area protection over traditional single beam devices.
Absolute columns may be equipped with two built-in CCTV cameras, one of which is equipped with a 16 mm lens (wide angle) and one with a 50 mm lens (telescopic viewing).