Concept Smoke Sentinel S55 Smoke Screen (Security Fog)
- 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)
The Sentinel S55 marks a step up from the S35 when it comes to output and is perfect for those situations when you need a little more from your security fog generator. It has all the features synonymous with the world class Sentinel range and is an incredibly versatile addition to your security setup.
- Warranty: 12 months parts and labour; followed by a further 24 months parts only.
- Service contract available - including free fluid re-fills and annual maintenance check.
- Simple integration into existing alarm systems.
- Powerful anti-raid burst (Turbo Mode) and multi-nozzle options.
- Dry, persistent fog guaranteed to leave no residue and won't damage your goods.
- Full heater redundancy protects against critical failure.
- Supports automatic re-firing via screen-sensor technology.
- Energy-saving mode.
- Battery back-up for off mains operation (min. 1 hour).
- Compliant with International (IEC62642:8) and European Standards (EN50131:8).
- Fill rate: 650 cubic metres in 60 seconds (standard ceiling size and based on continuous run time).
OPERATION
- 4 inputs and 7 outputs.
- LCD status display and on-board event log.
CONSTRUCTION
- Rugged and compact steel casing in white/black.
- Environmental pack for installation in confined spaces with elevated ambient temperatures.
- Precision steel heater block offers high levels of performance and reliability, and allows use of most persistent smoke chemical.
STANDARDS COMPLIANCE
- EN50131:8 and IEC62642:8.
- CNPP Rating: Class I Category 30.
FLUID
- 500ml/5,000ml fluid system.
DATA
- 37.0(H)* x 14(D) x 23(W) cm *add 0.5cm for feet.
- Weight: 12kg (pre-install), 14.5kg (installed).
The Smoke Screen Sentinel range has been designed and manufactured for permanent installation either as a fully integrated part of an intruder alarm system or as a stand-alone system. The range comprises some of the most advanced security fog generators in the world.
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