| Model No. | GD-SWJ540 | GD-SWJ420 | GD-SPWJ420 |
| Resolution: | 540TVL | 420TVL | 420TVL |
| Image Sensor: | 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/16mm Lens Selectable | ||
| Video Output: | 1.0vp-p.75Ω | ||
| IR Distance: | 50m | ||
| Auto Switch: | Day/Night | ||
| Power Supply: | DC 12V | ||
| Operating Temperature: | -10℃~+50℃ | ||
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