Ajax Hub2 (2g)
- 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 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)
Ajax Hub2
Hub 2 manages all the Ajax devices in the system to alert users about open doors, broken windows, threats of fire and flooding. If burglars break into your house, Hub 2 transmits pictures from the MotionCam detectors and notifies the alarm response company about the danger. You won’t need to live under the constant supervision of the security cameras to know what’s going on.
Transmits photos from MotionCam detectors
Automatically notifies the alarm response company
Full system control in one app
Communicates via 3 independent channels
Tech specs
- 100 devices can connect to the hub
- 10 cameras can connect to the hub
- 50 users can connect to the hub
- 50 rooms can be covered by the hub
- 9 groups can be used on the hub
- supports IOS and Android mobile applications
- Connectivity - Ethernet GSM (850/900/1800/1900 Mhz)
- Alarm signal delivery time 0.15 seconds, SMS, call, push notifications available
- Contact ID, SIA with monitoring stations
- ARM processor
- UP to 10 cameras or CCTV recorders
- Protection against jamming and tamper resistant
- operating temperature 5-40°С
- Sim card support 2G
- Mains supply 110-240V, Battery backup Li-ion 2 A-h (up to 15 hours when Ethernet off)
- Dimension 163x163x36 mm
- Grade 2, CE certification
- 2 Years replace or repair warranty (Batteries not covered)
