IR Dome Color CCD Camera Build-in 3.6/6/8/12mm lens Diameter 5:28 pieces + diameter 3:26 pieces IR LED Effective viewing distance: 50m TV system: PAL/NTSC Indoor Minimum illumination of 0 Lux (LED on) The description of different chips are as follows: HQ Resolution: 520TV lines PAL (H x V): 752 x 582 NTSC (H x V): 768 x 494 Current: 500mA Illumination of 0.4 Luf/1.2 STH: Image sensor: 1/3-inch Sony Resolution: 480TV lines PAL (H x V): 752 x 582 NTSC (H x V): 768 x 494 Current: 500mA Illumination of 0.5 Luf/1.2 STL: Image sensor: 1/3-inch Sony Resolution: 420TV lines PAL (H x V): 500 x 582 NTSC (H x V): 510 x 492 Current: 450mA Illumination of 0.8 Luf/1.2 SFL: Image sensor: 1/4-inch Sony Resolution: 420TV lines PAL (H x V): 500 x 582 NTSC (H x V): 510 x 492 Current: 450mA Illumination of 0.8 Luf/1.2 PTL: Image sensor: 1/3-inch Sharp Resolution: 420TV lines PAL (H x V): 500 x 582 NTSC (H x V): 510 x 492 Current: 400mA Illumination of 1.0 Luf/1.2 PFL: Image sensor: 1/4-inch Sharp Resolution: 420TV lines PAL (H x V): 500 x 582 NTSC (H x V): 510 x 492 Current: 400mA Illumination of 1.0 Luf/1.2 AGC: on/off Gamma characteristic: above 0.45 White balance: automatic Backlight compensation: on/off S/N ratio: greater than 48dB Power supply: 12V DC