Model GT-B720 GT-B721 GT-B722 GT-B728
Image Sensor 1/4” Sharp CCD 1/3” Sony Super HAD II CCD
Signal System PAL NTSC
Picture Elements PAL:500H×582V NTSC:510H×492V PAL:752H×582V NTSC:768H×492V
Horizontal Resolution 420 TVL 420 TVL 480 TVL 540 TVL
Lens C/CS
Synchronization Exterior
S/N Ratio ≥50 Db, (AGC Off)
AGC On/Off
White Balance AutoWhite Balance
Backlight compensation On/Off
Minimum illumination 0.5 Lux （F=1.2） 0.3 Lux （F=1.2） 0.1 Lux （F=1.2）
Video Output 1.0Vp-p 75 Ohm
Audio Output MP3
Electronic Shutter 1/50（1/60） to 1/100,000 s.
Electric Characteristic
Power Supply 12V DC ±5%
Weight 300g
Dimension 150(L)*60(W)*48.5(H)mm
Working Temperature -20°C to +50°C
Storage Temperature -10°C to +50°C
Image Sensor 1/4” Sharp CCD 1/3” Sony Super HAD II CCD
Signal System PAL NTSC
Picture Elements PAL:500H×582V NTSC:510H×492V PAL:752H×582V NTSC:768H×492V
Horizontal Resolution 420 TVL 420 TVL 480 TVL 540 TVL
Lens C/CS
Synchronization Exterior
S/N Ratio ≥50 Db, (AGC Off)
AGC On/Off
White Balance AutoWhite Balance
Backlight compensation On/Off
Minimum illumination 0.5 Lux （F=1.2） 0.3 Lux （F=1.2） 0.1 Lux （F=1.2）
Video Output 1.0Vp-p 75 Ohm
Audio Output MP3
Electronic Shutter 1/50（1/60） to 1/100,000 s.
Electric Characteristic
Power Supply 12V DC ±5%
Weight 300g
Dimension 150(L)*60(W)*48.5(H)mm
Working Temperature -20°C to +50°C
Storage Temperature -10°C to +50°C
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