| Model No. | GD-SWA540 | GD-SWA480 | GD-SWA420 | GD-SPWA420 |
| Resolution: | 540TVL | 480TVL | 420TVL | 420TVL |
| Image Sensor: | 1/3"SONY Super HAD CCD | 1/3"SONY Super HAD CCD | 1/3"SONY Super HAD CCD | 1/4"Sharp CCD |
| Pixels: | PAL: 795(H)×596(V), 752(H)×582(V),500(H)×582(V) | |||
| NTSC: 811(H)×508(V), 768(H)×494(V), 510(H)×492(V) | ||||
| TV System: | PAL/NTSC | |||
| Min Illumination: | 0Lux | |||
| S/N Ratio: | ≥ 48dB | |||
| Electronic Shutter: | 1/50s(1/60s)-1/100,000s | |||
| Gamma Correction: | 0.45 | |||
| Gain Control: | Auto | |||
| White Balance: | Auto | |||
| Backlight compensation: | Auto | |||
| Sync System: | Internal | |||
| Lens: | 3.6mm/6mm/8mm/12mm Selectable | |||
| Video Output: | 1.0vp-p.75Ω | |||
| IR Distance: | 25m | |||
| Auto Switch: | Day/Night | |||
| Power Supply: | DC 12V/750MA | |||
| Current Consumption: | ≤2.8W | |||
| Operating Temperature: | -10℃~+50℃ | |||
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