HDView (Hik Series) 2MP ONVIF IP Network IR PTZ Dome Camera 20X Optical Zoom, Network POE, 3D Intelligent Positioning Please buy SAME Series of IP camera and NVR, because it's Private Connection. More stable than ONVIF connection. 1/2.8" 2MP CMOS Sensor Zoom: 20X Optical / 16X Digital, ICR, DWDR, 30fps@2MP, Audio In/Out, Alarm In/Out microSD (up to 32GB) AC 24V/PoE IP66, Lightning/Surge proof