Ruijie Reyee MINI-GBIC-SX-MM850 1000BASE-SX Gigabit SFP Transceiver – Multimode LC, 850nm, 550m
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)
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Ruijie Reyee MINI-GBIC-SX-MM850 1000BASE-SX Gigabit SFP Transceiver – Multimode LC, 850nm, 550m
The Ruijie Reyee MINI-GBIC-SX-MM850 is a high-performance Gigabit SFP transceiver engineered for short-range fibre optic networking in enterprise, campus and data centre environments.
Designed to meet the IEEE 1000BASE-SX standard, it delivers dependable 1.25 Gbps data transmission over multimode fibre (MMF) using an 850 nm VCSEL laser and duplex LC connector. Supporting transmission distances of up to 550 metres on multimode fibre, the module is ideal for connecting network switches, routers, servers and storage devices within buildings or across campus infrastructures.
Its hot-pluggable SFP form factor allows installation or replacement without powering down network equipment, reducing maintenance time and improving network availability. The transceiver supports Digital Diagnostic Monitoring (DDM/DOM), enabling administrators to monitor operating parameters such as temperature, voltage and optical power in real time for improved network reliability and preventative maintenance.
With low power consumption of no more than 1.5 W and compliance with IEEE, SFP MSA and RoHS standards, it provides an efficient and dependable solution for Gigabit fibre connectivity.
Key Features
- 1000BASE-SX Gigabit SFP transceiver
- Supports data rates up to 1.25 Gbps
- Operates over multimode fibre (MMF)
- 850 nm VCSEL laser technology
- Maximum transmission distance of up to 550 m
- Duplex LC optical connector
- Hot-pluggable SFP (Mini-GBIC) form factor
- Digital Diagnostic Monitoring (DDM/DOM) support
- Low power consumption of ≤ 1.5 W
- Compliant with IEEE 802.3z, SFP MSA and RoHS standards
- Ideal for enterprise, campus and data centre fibre networks
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