Pickup device: 1/ 3-inch Sony Super HAD CCD Picture elements ( H x V) : a) PAL 752 x 582; b) NTSC: 768 x 492 Sensing area: 4.9 x 3.7mm System of signal: PAL/ NTSC Horizontal resolution: 480 TV lines Sync signal: INT Sync AGC control: auto Scanning system: 2: 1 interface ( H) equency: ( PAL) 15.625kHz, ( NTSC) 15.734kHz ( V) frequency: ( PAL) 50Hz, ( NTSC) 59.94Hz Lens: 3.5-8mm manual zoom lens White balance: auto-tracking white balance Mirror control: normal/ reverse Electronic shutter: PAL 1/ 50-1/ 100, 000 ; NTSC 1/ 60-1/ 100, 000 S/ N ratio: more than 48dB Minimum illumination: 0Lux Gamma: 0.45 Video output: 1.0V( p-p) 75 Power supply: 12V DC ( + 10% ) Operating current: 280mA Infrared wavelength: 42 units, 850nm Infrared lamps irradiation distance: 30 meter Infrared lamp: night ( opening) / day ( turn off) Weight: 1.0kg Size ( L x W x H) : 165 x 85 x 85mm