Smoke Screen Sentinel S35, 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, 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 Smoke Screen Sentinel range has been designed and manufactured for permanent installation as a fully integrated part of an intruder alarm system. The range comprises some of the most advanced security smoke generators in the world. The new, precision cast aluminium heater block offers high-performance levels and reliability. This translates to a more impressive volume of drier fog (no residue) that lasts for even longer.
The Sentinel S35 is the smallest Smoke Screen in the Sentinel range. Its compact size and impressive performance make the S35 suitable for almost any application, where fast-acting thieves may strike.
New PCB technology, ergonomic connectors, and multi-bracket design make installation easy and straightforward. Other features such as the internal battery back-up and a multi-nozzle system make the S35 incredibly versatile.
FEATURES
• Warranty: 12 months parts and labour; followed by a further 24 months parts only.
• 55 second initial burst for maximum smoke generation in risk critical areas
• Off-mains operational capability
• Energy save mode cuts costs in periods when the generator is not immediately needed
• Supports automatic re-firing via screen-sensor technology
• Extreme temperature operation: -10°C to 50°C
• £10 million product and public liability insurance
OPERATION
• 4 inputs and 7 outputs
• LCD status display and on-board event log
CONSTRUCTION
• Rugged and compact steel casing in pure white
• Environmental pack for installation in confined spaces with elevated ambient temperatures
• Aluminium heater block allows use of most persistent smoke chemical
STANDARDS COMPLIANCE
• EN50131:8 and IEC62642:8
• CNPP Rating: Class I Category 30
FLUID
• 500ml/5000ml fluid system
DATA
• 37.9(H)* x 14(D) x 23.2(W) cm *add 0.5cm for feet
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