Model GL-B312 Pickup device 1/3 Sony Number of signal System of PAL:512(H)?82(V) NTSC:512(H)?92(V)signal NTSC/PAL Horizontal resolution 420TVL Minium illumination 1.0LuxF1.2 Lens mount C/CS Backlight compensation Auto AGC Auto Electronic shutter 1/50(1/60)~1/100,000sec Iris control VIDEO/DC White balance NO/OFF S/N ratio >48dB Gamma correction >0.45 Operation temperature -20oC~50oC Sync.system Internal Video output ≤1.0v p-p /75Ω Power supply <150mA Dimensions(mm) 90(L)?8(W)?1(H) Weight(g) 338g