Compare HD51PX with HD4DIRSX (2)
| Contact manufacturer | Contact manufacturer | |
| Chip Inch Size |
1/3
|
1/3
|
| Colour Type |
Colour / Monochrome
|
Colour / Monochrome
|
| Resolution TVL |
600
|
600
|
| Dome Type |
Variable Focus
|
Variable Focus
|
| Sensitivity lux |
0.3
|
0.21
|
| Indoor/Outdoor |
Indoor/Outdoor
|
Indoor/Outdoor
|
| Mount Type |
Ceiling, Wall
|
--
|
| Voltage |
12 V DC
|
12 VDC / 24 VAC
|
| Focal length |
3.8 ~ 9.5
|
--
|
| Back Light Compensation |
✔
|
✔
|
| Auto Gain Control |
✔
|
✔
|
| White Balance |
✔
|
✔
|
| Electronic Shutter range |
1/50 ~ 1/120,000
|
> 50 db
|
| S/ N (Signal/ Noise) Ratio dB |
50
|
--
|
| Synchronisation |
Internal
|
--
|
| Signal Mode |
PAL
|
PAL
|
| Built-in IR LED |
--
|
✔
|
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