Akuvox R28A User manual

M4x30 crosshead screw x 2
Accessories:
Wall moun
Flush moun
Wall-mounting box x 1
Flush-mounting bracket x 1 Flush-mounting box x 1M4x10 crosshead screw x 6
Mainframe
ST4x20 crosshead screw x 6 Plastic wall anchor x 6
ST4x20 crosshead screw x 6 Plastic wall anchor x 6
:
:
Before you begin using the device, please check the version you got and ensure
that the following items are included in the shipped box:
Allen wrench x 1 R28A x 1
M3x5 crosshead screw x 4
Rope x 1
M3x6 hex socket screw x 2 Sealing ring x 1
R28A
Screen
Numerical Keypad
Mic
R28A
Dial Key
Clear Key
Page Up Key
Page Down Key
Rubber Plug (S,M,L) x3
Wiring cover x 1
ST1.7x4 crosshead screw x 2
Sealing pressing plate x 1
Diode x 3
Product Overview Speaker
Photosensitive Sensor
Infrared LED
Infrared Sensor
Camera
Card Reader

Installa
With 86 embedded box in the wall
Without 86 embedded box in the wall
Step 1: Bracket/Box Installa
Wall Moun
2
12
80
70
90
130
60
R28A
Installaon Environment
Indoor and outdoor installation are supported.
If installing the device outdoors, please don't place device under direct sunlight, it will bring a bad effect or be broken with
the high temperature.
If installing the device indoors, please keep device at least 2 meters away from light, and at least 3 meters away from
window and door .
Backlight Direct sun
through window
Close to lightDirect sunlight Indirect sunlight
through window
Fix the wall-mounting
box on 86 embedded
box with two M4x30
crosshead screws.
Mark the four holes
of the wall-mounting
box on the wall.
Take down two
M4x30 crosshead
screws and
wall-mounting box.
Use a hand drill
with 6 mm
diameter bit to
make holes in the
marked positions.
Insert the plastic
wall anchors into
the holes.
Mark the six holes of the
wall-mounting box on the
wall.
Use a hand drill with 5 mm diameter
bit to make the hole in marked
positions.
*Please note the relative position in the left
figure and the maximum error should less
than 5 mm.
Insert the plastic wall
anchors into the holes
you drilled before.
Fix the wall-mounting
box with six ST4x20
crosshead screws.
Fix the wall-mounting
box with four ST4x20
crosshead screws
and two M4x30
crosshead screws.

Dig out a square hole
(height*width*depth=262.5*121*60mm).
Note:The size of the hole should be a
little larger than recommended value
that can accommodate all cables .
Insert the flush-mounting box into the hole and
make sure the cables of the device can route
through the cable hole. Then mark the six
holes of the flush-mounting box on the wall.
Take down the flush-mounting
box, then use a hand drill with
6 mm diameter bit to make holes
in the marked positions.
Use six M4x10 crosshead screws to
fix the flush-mounting bracket on the
flush-mounting box.
Place the flush-mounting box into the square hole until
the edges of which align to the wall and make all
cables go through the cable hole. Fix the flush-mounting
box with six ST4x20 crosshead screws.
Note: The flush-mounting box can not over the edge of the square hole.
Insert the plastic wall anchors
in the hole you drilled before.
Dig out a square hole
(height*width*depth=262.5*121*60mm).
Note: The size of the hole should be a
little bigger than recommended value
that can accommodate all cables.
Use cement or non-corrosive structural
adhesives to fill the gap between the wall
and embedded box. Wait the adhesive
material desiccation, go to the next step.
Use six M4x10 crosshead screws to
fix the flush-mounting bracket on the
flush-mounting box.
Flush Moun
R28A
3
Waterproof Tips:
For flush mounting installation, it is recommended to fill the gaps
around the embedded box for waterproofing (to prevent water from
entering the back cover of the door phone from the gap).
For wall mounting installation, it is recommended to lock the
wall-mounted bracket and the wall so that the EVA pasted on the
bottom of the wall mounting bracket is close to the wall without a
gap (to prevent water from entering the back cover of the door
phone from the gap)
Or it is recommended to use rain cover.

4
Step 2: Wiring cover Installa
Step 3: Device Moun
1.Place the device into the wall-mounting box/
flush-mounting bracket until the edges of which
align to the wall. Then pull the device downward
and ensure the groove of it hooks to the lock
catches of the back box.
2.Use the Allen wrench to tighten the device with two
M3x6 hex socket screws.
.
Use four M3x5 crosshead screws
to fix the wiring cover..
For convenient wiring, hang
R28A on the wall-mounting
box/ flush-mounting bracket
with rope. Then insert the
sealing ring into the groove.
R28A
Wall Mounting Flush Mounting
Make cables go through the wiring cover,
connecting to the corresponding interfaces of the
main board. Choose a suitable size rubber plug to
compress cables, then fasten the sealing pressing
plate with ST1.7x4 crosshead screws.

5
Network Video Recorder
(third party)
SIP Video Phone
LAN
PoE PoE PoE PoE
PC
(third party)
Applicaon Network Topology
R28A
R28A R28A R28A R28A
Device Wiring
When you connect a device containing a
coil, such as a relay or an electromagnetic
lock, it is necessary to protect the
intercom against voltage peak while
switching off the induction load. For this
way of protection we recommend a diode
1 A / 200 V (included in the accessories)
connected antiparallet to the device.
Warning
Wire Length & AWG Table
Please follow the properly measured wire gauge/length to install device:
20 AWG 22 AWG 24 AWG
12V 1A Adapter ≤20m ≤10m \
26 AWG
\

Make a call:
Input the room number, press Dial key to make a call.
Receive a call:
R28A supports Auto Answer by default. Incoming calls will be answered automatically.
Unlock by DTMF:
During the call, press the corresponding DTMF code of answer unit to unlock R28A remotely.
Opera
6
Configuraon
1.IP Address Checking: Press *2396# to enter administrator setting interface. Click System
Information to get the IP address. R28A uses DHCP by default.
2.Account Registration: On web UI, go to the path: Account > Basic page to register
account and fill in the account information. ( Please refer to admin guide for more
information)
3.DTMF Code Configuration: On web UI, go to the path: Intercom > Relay > Relay
ID/DTMF and choose the DTMF code number in corresponding area.
R28A
AKUVOX (XIAMEN) NETWORKS CO., LTD.
Add.: 10/F, NO.56 GUANRI ROAD, SOFTWARE PARK II, XIAMEN 361009, CHINA
www.akuvox.com
Notice Information
Akuvox R28A firmware contains third-party open source software under the terms of the GNU General Public
License(GPL). Akuvox is committed to meeting the requirements of the GNU General Public License (GPL) and will
make all required source code available.
The source code of software under the terms of GNU GPL can be downloaded online:http://www.akuvox.com/gpl.
Information contained in this document is believed to be accurate and reliable at the time of printing. This document is
subject to change without notice, any update to this document can be viewed on Akuvox’ s website:
http://www.akuvox.com © Copyright 2023 Akuvox Ltd. All rights reserved.
Unlock by Card(Optional):
Place the predefined RF Card in the card reader area to open the door.