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Model Number GS420-D97SY4 GS420-D97SY3
Image Sensor 1/4 Sony CCD 1/3 Sony CCD
Signal system PAL / NTSC
Horizontal Resolution 420 TVL
Effective Pixels PAL: 512(H)x582(V) NTSC: 512(H)x492(V)
Lens 3.6mm, 6mm lens optional
Video Output Composite 1.0Vp-p at 75ohm
S/N Ratio ≥ 48dB(AGC OFF)
Minimum illumination 0.5LUX/F1.2
Sync. System Inter line Synchronization
Electronic Shutter 1/50(60)~1/100, 000 sec (NTSC/ PAL)
White Balance Auto
Exposure Mode EE
Power Supply DC12V.
Plastic IR Dome Camera (GS420-D97SY4 GS420-D97SY3)