Akuvox - SR01 Security Relay, Compact Security Single Door I/O Module
- 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 Akuvox SR01 security relay provides an additional layer of security for door strikes / electric locks when used in conjunction with the following Akuvox door intercom and access devices: A02, R20, R28, R29, X915, X912 and E16.
The SR01 has ultra-compact form, it easy to be placed in most standard installation boxes and is installed on the secure side of the door.
This simple add-on accessory prevents locked doors being illicitly opened using a 12v battery (a technique used by criminals to open power locks).
By including an SR01 relay to each door’s locking system adds the requirement for an automatic verification code from the Akuvox door intercom device, in order to unlock the door. If the security relay does not receive a code (for instance, if an attempt to open the lock via 12v battery is made), then the door will remain securely locked.
- Additional layer of door /access control security
- Prevents unlocking of door strikes / electric locks using 12v battery
- For use with Akuvox door intercom devices only
- Compatible Akuvox door intercom and access devices: A02, R20, R28, R29, X915, X912 and E16
Description SR01
| Description | SR01 |
|---|---|
| Environment | Indoor |
| Relay out | 1 |
| Casing | Plastic |
| RS485 | 1 |
| Input | 1 |
| Mounting | Fits in standard installation boxes |
| Button | 1 for pairing |
| Working Humidity | 10~90>#/td### |
| Indicator | 2 |
| Power In | 12V/100mA (Min.) |
| Working Temperature | -20°C ~ +60°C |
| Dimensions | 31 x 56 x 24mm |
| Weight (Net) | 0.20kg |
| Weight (Gross) | 0.30kg |
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Akuvox X912 - How to enable SR01 Security Relay Module
