Buy any of the three cameras and receive a fourth one for free; limited to lowest cost unit only. Promotional pricing on this item is available while stocks last or until 31/01/20 when purchased as a standalone item. 1/3" Progressive CMOS,ICR,2560x1440:20fps(P)/(N),H.265+/H.265/H.264+&H.264,3D DNR,BLC,DC12V & PoE,Support mobile monitoring via HiLookVision *power supply no included