Hikvision DS-2CD2735F-IS 4mm 1/3" Progressive Scan CMOS PAL/NTSC Signal System True day/night 3MP IP66 Network IR Dome Camera 1/3" Progressive Scan CMOS 3MP (2048 x 1536) high resolution 4mm fixed lens Up to 20m IR visibility, True day/night 3D DNR & DWDR & BLC, IP66 rating, Vandal-proof housing