Akuvox - R25AS-DRK IP Door Intercom Unit with 1 Call Button (Fisheye Camera & RFID Card reader), Surface Mount
- 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 R25A is a single-button SIP video intercom phone that seamlessly combines security, style, and functionality. Designed for residential properties, this device offers versatile access methods, superior image quality, and seamless integration with third-party systems.
Using the latest IP connectivity technology, the new Akuvox R25A IP intercom enables visual monitoring and one-to-one voice communication between residents & visitors and secure remote access; idea for multi-dwelling (MDUs), apartments, entrance gates and unmanned office receptions.
The built-in RFID reader allows for contactless, secure access using RFID cards or keyfobs. The R25AS is supplied complete with surface-mount backbox.
This model - the R25AS-DRK is surface mount, finished in space-grey.
Akuvox R25A SIP door telephone with 150° Wide-angle camera for Wall-mount.- Single speed-dial button with blue backlight
- Linux operating system
- Wide-angle fisheye coour camera: 150º
- PoE (IEEE802.3af, Power-over-Ethernet)
- Two-way audio communication over IP networks with Echo Cancel feature
- Complies with SIP & ONVIF
- IP65 protection rating for outdoor and harsh environments
- Surface mount version
- Finished in space grey
- Single speed-dial button with blue backlight
- Linux operation system
- Wide-angle camera: 150º (H), 150º (V)
- Two-way audio communication over IP networks with Echo Cancellation & Noise suppression
- Surface-mounted
- Complies with SIP & ONVIF
- Front panel Brushed Aluminum (Black)
- IP Rating IP65
- RF card reader 13.56MHz & 125kHz, NFC
- Viewing angle 150°(H) / 150°(V)
- Video codec H.264
- Video resolution up to 2000x2000
- Tamper alarm Support
- Working Humidity 10~90%
- Working Temperature -40°C ~ +55°C
- Storage Temperature -40°C ~ +70°C
- Light sensor Supported
- Motion sensor Supported
- Wiegand port Supported
- Ethernet port RJ45, 10/100Mbps adaptive
- Dimensions 145 (H) x 85(W) x 24.8 (D)mm
- Weight (Net) 0.55kg
- Weight (Gross) 0.70kg
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Akuvox R25A SIP Video Intercom – Advanced Security Meets Modern Design
