Model Name RYK-2B47 Image Device 1/4" Color Sony Super HAD Picture Elements NTSC:510x492, PAL:500x582 Resolution 380 TVL Min. Illumination 0.5 Lux / F 2.0 (Day), 0 Lux (IR on) S/N Ratio More than 48dB Electronic Shutter NTSC:1/60~1/100,000, PAL:1/50 ...