EMS FireCell FC-868-SE2 Wireless Survey Kit
- 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)
Product Details for EMS FireCell FC-868-SE2 Wireless Survey Kit
The EMS FireCell FC-868-SE2 Wireless Survey Kit is powerful yet easy to use, providing valuable information needed for both installers and service providers.
With simple but highly intuitive controls, making it easy to use and complete either a wireless integrity test in minutes or a more detailed survey for installation purposes, the red and green indicators give instant information on the signal strength with an LED screen providing detailed signal levels.
The survey kit comprises of the Signal Surveyor as well as the Device Survey Tool which is placed in each device location to confirm the signal is satisfactory. In addition extension poles are included for ceiling mounted device locations and the entire kit is supplied in a robust case for easy storage and transportation.
Key Features of the FC-868-SE2 |
|---|
| > Wireless survey kit > Supplied with step-by-step instructions > Intuitive controls > Signal strength indicators > LED screen for detailed signal levels > Kit supplied in robust case for storage and transportation > 868 MHz dual band > RED & EN60950-1 certified (3rd party) |
Product Specification for EMS FireCell FC-868-SE2 Wireless Survey Kit
| Dimensions: Signal surveyor Device survey tool | W:270mm x H:205mm x D:85mm W:115mm x H:210mm x D:60mm |
| Power requirement (Signal surveyor): | 100 - 240 VAC (+/- 10%) |
| Batteries: Signal surveyor Device survey tool | 6V 4Ah Lead Acid 6 x AA alkaline batteries |
| Operating frequency: | 868 MHz |
| Output transmitter power: | 0 - 14 dBm (auto adjusting) |
| Operating temperature: Signal surveyor Device survey tool | -10oC to +50oC -10oC to +55oC |
| Weight: Signal surveyor Device survey tool | 1.9 kg 0.6 kg |
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