The ceiling mount, low profile panoramic DS936 PIR Detector uses alternate polarity pulse count. It also uses a pointable Fresnel lens to provide up to 7.5 m (24 ft) of coverage and can be mounted on the surface, or semi-flush directly to a ceiling or a standard octagonal electrical box.
Enhanced Signal Processing
Field-selectable for standard, intermediate or high. Internal noise voltage test pins provide precise pattern location and background disturbance evaluation using a standard analog meter