Akuvox - R20AF Compact IP Door Intercom Unit with 1 Call Button (Video & Card reader) incl. Flush Mount Backbox
- 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 R20AF SIP Intercom is a highly-compact, single call button, IP-connected Door Intercom, featuring high resolution colour camera and RFID card reader for swift , secure remote audio/video communication and door entry.
Using the latest IP connectivity technology, Akuvox R20AF enables visual monitoring and one-to-one voice communication between residents & visitors and secure remote access; ideal for multi-dwelling units (MDUs), apartments, entrance gates and unmanned office receptions.
The built-in RFID reader allows for contactless, secure access using RFID cards or keyfobs.
This model is supplied complete with flush-mount backbox.
IP65 protection rating allows for internal and external location.
SIP Endpoint
• SIP v1(RFC2543), SIP v2(RFC3261)
• Audio codecs: G.711a, G.711μ, G.722, G.729
• Video codecs: H.264
• Echo Cancellation
• Voice Activation Detection
• Comfort Noise Generator
• Door opener via DTMF post-dial
Video
• Resolution: up to 720p
• Maximum image transfer rate: 720p - 30fps
• High intensity IR LEDs for picture lighting during dark hours with internal light sensor
• Compatible to 3rdPartyVideo components, e.g. NVRs
Door Entry Features
• Relays controlled individually by DTMF tones
• Camera permanently operational
• White balance: auto
• Auto-night mode with LED illumination
• Minimum illumination: 0.1LUX
• Wiegand output for integration with 3rd party door release
Networking
• 1x10/100 Mbps Ethernet port
• Protocols support: IPv4, HTTP, HTTPS, FTP, SNMP, DNS, NTP, RTSP, RTP, TCP, UDP, ICMP, DHCP, ARP
Application Scenarios
• Office door phone with on-site or hosted IP-PBX
• Remote site entry over Internet
• Apartment/flat intercom with door access control
IP connected Door Intercom
Single Call Button
Integrated RFID Card Reader
IP65 protection rating
Wiegand output for integration with 3rd party door release
Wide-angle camera: Horizontal 120°, Vertical 65°
PoE (IEEE802.3af, Power-over-Ethernet)
Two-way audio communication over IP networks with Echo Cancel feature
Complies with SIP standard for easy integration in every SIP capable PBXes
Complies with ONVIF standard for easy integration with any network surveillance system
Description R20AF
- Water-proof & Dust-proof protection rating IP65
- Camera 3M pixels, automatic lighting
- Button 1 call button
- G-sensor Supported
- Infrared Sensor Supported
- RS485 Supported
- RF Card Reader 13.56MHz & 125kHz
- Output Relay 2 output relays for remote door lock control
- PoE IEEE 802.3af
- Power Requirements PoE or 12v DC
- Installation Flush mounted (backbox included)
- Body Material Zinc alloy
- Overall Dimensions (incl backbox & faceplate) 190(H) x 120(W) x 55.5(D) mm
- Backbox Cut-out Dimensions 180(H) x 101.5(W) x 50(D) mm
- Dimensions visible when flush mounted 190(H) x 120(W) x 7(D) mm
- Weight (Net) 0.60kg
- Weight (Gross) 1.00kg
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Akuvox R20A Compact IP Door Intercom with camera & RFID
