Benefiting from the same sophisticated detection technology as the EV-P, the EV-PS Optical Detector comes with a sounder fully integrated within the sensor itself as opposed to a separate sounder base. The EV-PS sensor drives and controls the EV-PSBCN base, with the entire platform only taking one address for maximum system efficiency. This clever design makes for quick and simple installation, saving both time and money, whilst remaining extremely competitively priced. It also makes for a more aesthetically pleasing appearance, with a lower profile for an unobtrusive appearance.