Smoke Screen Sentinel S70, Security Fog/Cloak Machine
- 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 and frame rate settings. 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.
|
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 a minimum of 2 Terabytes per 4 x 2-4MP HD cameras, as this should give you 2 weeks to a month with a few adjustments on motion detected recording. You may only require the full 25 frames per second on certain cameras if things are fast moving.
(All of our hard drives come fitted and are CCTV specific from one of the major brands)
The Sentinel S70 is designed to be installed in any configuration. Its compact size and impressive performance make this the workhorse of the range, suitable for most applications: shops, offices, workshops, service stations, jewellers – anywhere fast-acting thieves may strike.
- Warranty: 12 months parts and labour; followed by a further 24 months parts only.
- Simple integration into existing alarm systems.
- Powerful anti-raid burst (Turbo Mode) and multi-nozzle options.
- Dry fog guaranteed to leave no residue and won't damage your goods.
- Persistent fog production – small particle size means the smoke will last up to 40 minutes unventilated.
- 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).
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.
- Machined steel heater block allows use of most persistent smoke chemical.
STANDARDS COMPLIANCE
- EN50131:8 and IEC62642:8.
- CNPP Rating: Class I Category 30.
FLUID
- 1,000ml/5,000ml fluid system.
DATA
- 46.5(H)* x 13(D) x 31(W) cm *add 0.5cm for feet.
- Weight: 14.3kg (pre-install), 19kg (installed).
- Mains power supply: an unswitched 13 amp fused spur connected to a dedicated breaker.
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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