Description : KERUI P812 Wired PIR Detector Dual Element Infrared Sensor Fresnel Optical Lens 110 Degree Detecting Angle Features : Advanced signal analysis and processing technology, ultra high detection and false alarm performance. Intelligent logic control filter out all sorts of false alarm, radio frequency interference. True temperature compensation technology. Bipolar pulse technology is adjustable. Fresnel optical lens. Alarm output NO\/NC is optional. Manufactured in SMT process. Specification : Detecting distance: 8~12m Detecting angle: 110 Radio distance: 150m (open area) Sensor: Dual element infrared sensor Package includeds : 1 x KERUI P812 PIR Detector 1 x Set of Installation Accessories Details pictures :