20m ir dome camera,500tvl ir dome camera,cctv camera,6mm dome camera,23PCs LED dome camera Model No. KD-520S-D7002A KD-500S-D7002B KD-420S-D7002C KD-420X-D7002D KD-420X-D7002E KD-420X-D7002F Image sensor SONY 1/3" CCD SONY 1/4" CCD 1/3"SHARP CCD 1/4" SHARP CCD Effective Pixels PAL  752H582V     NTSC 768H494V Single System PAL/NTSC Horizontal Resolution 520TVL 500TVL 420TVL Minimum Illumination 0LUX(IR ON) S/N Ratio More than 48dB Video Output 1.0Vp-p/75 AGC Auto White Balance Auto Backlight Compensation Auto Exposure Mode EE Electronic Shutter 1/50(1/60) - 1/100000 sec Gamma Correction 0.45 Sync.System Internal Synchronization Lens 6mm IR LEDs 23pcs IR View Distance 20m Power Supply DC12V5% Case Color optional violet or silver or black color Operation Temperature -10--50 Net Weight 728.4g