mini camera,3.7mm covert camera,520tvl mini camera,hidden camera,cctv cameras,surveillance camera Model No. KD-520S-C1005A KD-500S-C1005B KD-420S-1005C KD-420S-C1005D KD-420X-C1005E KD-420X-C1005F Image sensor Color Sony 1/3"  CCD Color Sony 1/4"CCD Color SHARP 1/3"  CCD Color SHARP1/4"  CCD Effective Pixels PAL  500H582V     NTSC 510H492V Single Systerm PAL/NTSC Horizontal Resolution 520TVL 500TVL 420TVL Minimum Illumination 0.8LUX/F1.2 1 LUX/F1.2 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. Systerm Internal Synchronization Audio Optional Lens 3.7mm Power Supply DC12V5% Operation Temperature - 20--50