The VE735 uses Interlogix’s unique patented PYRO and V2E technology. With existing technology PIR detectors, IR signals are captured by a pyro-electric sensor placed in the detector’s focal point . When a conventional pyro sees a thermal source within the surveillance area, it will generate a one-dimensional signal (value) and the presence of the source can be detected.

The detection probability within the area is determined only by the resolution of the optics of the motion detector. However due to the unique construction of the VE735 patented pyro, a thermal source will generate a multi-dimensional signal (vector), allowing the pyro to determine not only the presence but also the direction of motion of a thermal source. This now means that the detection probability is equal to the product of the resolution of the optics and the multi-dimensional output of the pyro.