IR Weatherproof CCD Color Camera with Varifocal Auto Iris Lens and Horizontal Resolution of 420TVL Model Number:STL6018 Image sensor: 1/3-inch Sony Horizontal resolution: 420TV lines TV system: PAL and NTSC Pixels: PAL: (H) 500 x (V) 582 NTSC: (H) 510 x (V) 492 Zoom: varifocal manual iris 4 to 9mm Managed cable anti-cutting bracket Externally adjust for zoom and focus Auto white balance IR: 45m LED: ?mm AGC: on or off Current: 400mA Backlight compensation: on or off Signal-to-noise ratio: greater than 48dB Power supply: 12V DC Gamma characteristic: above 0.45