Model UV-5503 UV-5504 UV-5505 UV-5506 Pickup device 1/3" Color Sony CCD 1/3" Color Sharp CCD Number of pixels PAL:752(H) x 582(V) NTSC: 768(H) x 494(V) PAL:512(H) x 582(V) NTSC: 512(H) x 492(V) System of signal PAL/NTSC Horizontal resolution 480TV Line 450TV line 420TV Line Minimum illumination 0Lux IR leds&IR distance 5x49+3x55 PCS IR LED,IR distance 70~80m Lens 6mm fixed iris lens Backlight compensation Auto Electronic shutter NTSC: 1/60~1/10.000Sec PAL: 1/50~1/10.000Sec AGC Auto White balance ON/OFF(Optional) S/N ratio More than 48Db (AGC off) Gamma correction >0.45 Operation temperature -20~50 Sync system Internal/System Video output 1.0Vp-p (75????????omposite)