Smoke Screen Sentinel S35, Security Fog/Cloak Machine
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)
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Concept Smoke Screen Sentinel S35 Security Fog Generator
The Sentinel S35 is the smallest security fog generator in the Sentinel range, combining a compact footprint with powerful fog output for protecting shops, offices, homes, server rooms and other vulnerable areas.
Designed to integrate with an existing intruder alarm system or operate as part of a standalone security solution, the S35 can rapidly fill an area with dense dry fog to obscure visibility and help prevent intruders from locating or removing valuable items. Its standard fill rate is up to 400m³ in 60 seconds.
The unit includes Turbo Mode for powerful anti-raid activation, multiple nozzle options, automatic re-firing support via Screen Sensor technology and an internal battery backup for continued operation during a mains power failure. The dry fog is designed to leave no residue and can remain suspended for up to 40 minutes in an unventilated area.
Key Features:
- Compact Sentinel S35 security fog generator
- Fill rate up to 400m³ in 60 seconds
- Powerful anti-raid Turbo Mode
- Multiple nozzle options
- Dry fog leaves no residue
- Fog can remain suspended for up to 40 minutes unventilated
- Simple integration with existing alarm systems
- Supports automatic re-firing using Screen Sensor technology
- Energy-saving mode
- Internal battery backup for off-mains operation
- 4 inputs and 7 outputs
- LCD status display
- On-board event log
- 500ml fluid bladder system
- Rugged compact steel casing
- EN50131-8 compliant
- IEC62642-8 compliant
- CNPP Class I Category 30 rated
- Dimensions: 379 x 232 x 140mm
- Suitable for homes, offices, shops, server rooms and commercial premises
New Sentinel range (security smoke generators)
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