Concept Smoke Sentinel S55 Smoke Screen (Security Fog)
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 S55 Security Fog Generator
The Sentinel S55 is a powerful security fog generator designed for commercial and higher-risk applications where a greater fog output is required.
It sits above the S35 in the Sentinel range and is ideal for shops, offices, stockrooms, warehouses and other premises that need fast, effective visual protection.
The S55 can fill up to 650m³ in 60 seconds, rapidly creating a dense, persistent fog that obscures visibility and helps prevent intruders from locating or removing valuable property. The fog is dry and residue-free, making it suitable for protecting a wide range of goods and equipment.
It integrates easily with existing alarm systems and includes Turbo Mode, multiple nozzle options, automatic re-firing support via Screen Sensor technology and battery backup for at least one hour of off-mains operation. Full heater redundancy also helps protect against critical failure, making it a robust choice for professional security installations.
Key Features:
- Fill rate up to 650m³ in 60 seconds
- Powerful anti-raid Turbo Mode
- Multiple nozzle options
- Dry, persistent fog leaves no residue
- Simple integration with existing alarm systems
- Automatic re-firing via Screen Sensor technology
- Full heater redundancy
- Energy-saving mode
- Battery backup for a minimum of 1 hour off mains
- 4 inputs and 7 outputs
- LCD status display
- On-board event log
- 500ml / 5000ml fluid system
- Rugged steel casing
- Available in white or black
- Environmental pack option for confined or higher-temperature installations
- EN50131-8 compliant
- IEC62642-8 compliant
- CNPP Class I Category 30 rated
- Dimensions: 370 x 140 x 232mm
- Weight: approximately 12kg pre-installation / 14.5kg installed
- 5-year warranty
New Sentinel range (security smoke generators)
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