HIKVISION DS-PDP18-EG2 AX PRO Series WIRED Detector
- CCTV Lens Guide
- Hard Drive Size Guide
Unless selecting a vari-focal camera (with an adjustable lens) It is important to select the correct camera lens option for where the camera is to be positioned. A smaller lens will give you a wider angle but will be "zoomed out more", while a bigger lens will narrow the angle down and "zoom in more". See below to give you some idea on angles of Megapixel HD Cameras:
| Lens in mm | Approx Viewing Angle (degrees) | Ideal Distance (metres) | Typical usage/notes |
|---|---|---|---|
| 2.8 | 106 | <6 | For seeing as much of the immediate area as possible such as above a doorway/low down/garage soffits (edges can appear slightly warped/distorted) - clearly "zoomed out" |
| 3.6/4 | 83-90 | <12 | A great general purpose option giving great coverage still in the corner of a room or higher up on second floor soffits with less distortion - more of a natural "zoom" |
| 6 | 56 | 6-20 | Narrows down the angle and zooms in to look past the immediate area a little to gain more detail - down a driveway for example from higher up |
| 12 | 24 | 20+ | Zooms in significantly more to look at a gate, entrance or adjascent building |
| 16 | 19 | 24+ | As above but more so |
The amount of hard drive space you require is dictated by how many cameras, as well as their resolution, frame rate settings, and whether you have H.265 encoding enabled or not to save space (We advise turning it on to double the capacity shown below with ease).
Finally, you can often make your storage space last a lot longer by enabling motion-detected recording rather than continuous, especially if there are long periods of no activity (to perhaps double or more these figures again).
|
Resolution (Megapixels) |
Days of storage provided by 1TB per camera (continuous - full 25 frames per second) |
Days of storage provided by 1TB per 4 cameras (continuous - full 25 frames per second) |
Days of storage provided by 1TB per 4 cameras (50% motion- 15 frames per second) |
|---|---|---|---|
| 1 | 44 | 11 | 36 |
| 2 | 22 | 5 | 18 |
| 3 | 17 | 4 | 14 |
| 4 | 11 | 3 | 9 |
| 5 | 9 | 2 | 8 |
| 6 | 8 | 2 | 6 |
| 8 (4K) | 5 | 1 | 4 |
| 12 | 4 | 0.5 | 3 |
As a rule of thumb, we recommend 2 Terabytes for a 4 x 4/5MP HD camera setup, as this should give you approx 2 weeks using H.265 @ 20fps and that is on continuous, not motion-detected recording.
(You may only require the full 25 frames per second on certain cameras if things are fast-moving - ie above a till)
You can also use the Hikvision online calculator to work out what works best for you specifically: https://tools.hikvision.com/ca...
(All of our hard drives come fitted and are CCTV-specific from one of the major brands)
Wired internal 18m PIR detector
- Modern design - Delivers a small and sleek detection solution; providing a modern yet unobtrusive finish to complement any room.
- Detection range - Up to 18m volumetric detection coverage, the Ellipse is the ideal solution for any small to large indoor rooms and spaces.
- Digital temperature compensation – Digitally adjusts its sensitivity to maintain its specified range when the background temperature is close to body temperature.
- Automatic sensitivity - self-adapts to changing environmental conditions to maintain stability and intruder catch performance.
- 3D optics - Improves the detection of moving targets; ensuring more precise signals can be received from the PIR by enabling the perfect focusing of the infra-red signal onto the pyro-electric sensor.
- Creep-zone protection - covers the blind spot area directly below it, where an intruder may have otherwise avoided detection.
- Selectable EOL resistors - incorporates selectable alarm resistor values of 1K, 2K2, 4K7, 5K6 and 8K2, as well as tamper resistance values of 1K, 2K2, 4K7 and 5K6; catering for most control panels on the market.
- Wall and ceiling mount options - can be fitted at a mounting height of 1.8m to 2.4m . There is also a ceiling mount option available if required.
- Anti-insect interference - Protects the detector from possible insect infestation, as well as shielding air movement in front of its pyro-electric sensor and protecting against adverse reflections from inside the detector housing.
- Wide voltage - 9 to 16 V wide voltage adaptation with polarity reverse connection protection
- IFT technology - automatically adjust the upper and lower alarm trip thresholds when exposed to electromagnetic or electrical interference and shift the thresholds before the detector goes into false alarm.
No posts found
