Ajax MultiTransmitter FIBRA - For connecting up to 18 wired sensors (3EOL support)
- 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 second life of an old wired alarm
MultiTransmitter Fibra allows building the modern complex security based on existing third-party wired
equipment already installed at a facility. With this integration module, the owners of an old alarm system
receive the in-app security modes control, informative notifications, and automation scenarios from Ajax. An
installer can configure the system or connected devices in the PRO app remotely, even without visiting a
facility.
Maximum compatibility
MultiTransmitter Fibra does not limit users in their selection of wired devices to connect. The integration
module supports NC, NO, EOL, 2EOL, and 3EOL connection types. EOL resistance is set automatically
in the Ajax PRO app.
The device supports EOLs with resistance from 1 kΩ to 15 kΩ each with total resistance of 30 kΩ. EOLs
with different resistance can be used in one device in order to increase the protection against sabotage.
Recommended EOL ratio: R1=R , R2=2·R , R3=3·R .
MultiTransmitter Fibra has four 12 V⎓ power outputs for third-party wired devices: one for a fire detector and
three for other devices.
Fibra is the protocol ensuring fast and secure two-way communication between hub and MultiTransmitter
Fibra. Using a bus connection method, Fibra delivers instant data-rich alarms: security companies and users
know which device connected to MultiTransmitter Fibra was triggered, when and where it happened.
Fibra features encryption and authentication to prevent spoofing, and polling to display device states in real
time. Supporting up to 2,000 m of wired connectivity, Fibra is ready to protect any facilities and deliver the
best user experience for both system owners and installers.
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Ajax MultiTransmitter is a renovation of wired alarm
