DH-IPC-HDW4421E(-AS)Technical Specifications ModelDH-IPC-HDW4421E(-AS)Camera Image Sensor 1/3” 4Megapixel progressive scan CMOS Effective Pixels 2688(H)x1520(V) Scanning System Progressive Electronic Shutter Speed Auto/Manual, 1/3(4)~1/100000s Min. Il umination 0.01Lux/F2.0 (Color), 0Lux/F2.0(IR on) S/N Ratio More than 50dB Video Output N/A Camera Features Max. IR LEDs Length 50m Day/Night Auto(ICR)/Color/B/W Backlight Compensation BLC / HLC / WDR(120dB) White Balance Auto/Sunny/Night/Outdoor/Customized Gain Control Auto/Manual Noise Reduction 3D Privacy Masking Up to 4 areas Lens Focal Length 3.6mm (6mm optional) Max Aperture F2.0(F1.9) Focus Control Manual Angle of View H:81°(55°) Lens Type Fixed lens Mount Type Board-in Type Video Compression H.264/H.264H/H.264B/MJPEG Resolution 4M(2688× 1520)/4M(2560× 1440)/1080P(1920× 1080)/720P(12 80× 720) /D1(704× 576/704× 480) / CIF(352× 288/352× 240) Frame Rate Main Stream 4M(1~20fps)/3M(1~25/30fps) Sub Stream D1/CIF(1~20fps) Third Stream 720P(1~20fps) Bit Rate H.264: 32Kbps~10Mbps Corridor Mode Support Audio Compression G.711a/ G.711u/ AAC(only for -AS) Interface Built-in Mic(only for -AS) Smart Function(Optional) Tripwire Intrusion Abandoned/Missing Smart detection Scene Change Audio detect