Product model: HC - QJ838 image sensor: 1/3 "SONY CCD horizontal definition: 480 television line product model: HC - QJ832 image sensor: 1/3 "SONY CCD horizontal articulation: 420 television line product model: HC - QJ842 image sensor: 1/4 "SONY CCD horizontal definition: 420 television line product model: HC - QJ642 image sensor: 1/4 "SHARP CCD horizontal definition: 420 television line Other parameters: pixel: 500 (horizontal) x 582 (vertical) PAL, 510 (horizontal) x 492 (vertical) NTSC formats formats: NTSC/PAL synchronization systems: inter synchronization/power synchronous (only AC24V ), horizontal definition: 420 /480 television line minimum illumination: 0.8 Lux/F1.2 signal-to-noise ratio: ≥48dB shutter speed: 1/50 (1/60) - 1/100, 000 (SEC), video output: BNC type 1.0Vp-p75Ω white balance: automatic tracking white balance backlight compensation: open/close is optional gain control: open/close is optional electronic shutter: ELC/ ALC power consumption： DC12V 1.8W; AC90V-230V 3W; AC24V 3W driver mode of lens: fixed 4/8/12/16MM is optional