Redback A 4505C User manual

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Redback® A 4505C Lockdown Timer with Network Access
Operating Manual
A 4505C Lockdown Timer
Optional Accessories
A 2064 Lockdown/Fire/Cancel Remote Wall Plate (Hard Wired)
A 2069 Lockdown/Fire/Bell/Cancel Remote Wall Plate (Hard Wired)
A 4599 Lockdown/Fire/Bell/Cancel Remote Wall Plate (U/UTP Cat5)
A 4599V Lockdown/Fire/Bell/Cancel Remote Wall Plate (U/UTP Cat5)
A 4579 Timer Isolate Remote Wall Plate (U/UTP Cat5)
IMPORTANT NOTE:
Please read these instructions carefully from front to back prior to installation.
They include important setup instructions.
Failure to follow these instructions may prevent the unit from working as designed.
A 4599 Remote Plate
A 2069 Remote Plate
Distributed by Altronic Distributors Pty. Ltd.
Phone: [phone] Fax: [phone] Internet: www.altronics.com.au
User manual revision number: 1.1 08/08/2022
A 4599V Remote Plate
A 2064 Remote Plate
IMPORTANT NOTE:
These instructions are only suitable for A 4505C models or A 4505B
models which have been upgraded with the A 4505C rmware.
Firmware updates are available from altronics.com.au or
redbackaudio.com.au.
A 4579 Remote Plate

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Redback® A 4505C Lockdown Timer with Network Access
REDBACK is a registered trademark of Altronic Distributors Pty Ltd
You may be surprised to learn that Altronics is still manufacturing hundreds of product lines right here in Australia. We
have resisted the move offshore by offering our customers better quality products with innovations to save them time and
money.
Our Balcatta production facility manufactures/assembles:
Redback public address products
One-shot speaker & grill combinations
Zip-Rack 19 inch rack frame products
We strive to support local suppliers wherever possible in our supply chain, helping to support Australia’s manufacturing
industry.
Redback Audio Products
100% developed, designed & assembled in Australia.
Since 1976 we have been manufacturing Redback ampliers in Perth, Western Australia. With over 40 years experience
in the commercial audio industry, we offer consultants, installers and end users reliable products of high build quality with
local product support. We believe there is signicant added value for customers when purchasing an Australian made
Redback amplier or PA product.
Local support & feedback.
Our best product features come as a direct result of feedback from our customers, and when you call us, you speak to a
real person - no recorded messages, call centres or automated push button options.
It’s not only the assembly team at Altronics who are employed as a direct result of your purchase, but hundreds more at
local companies used in the supply chain.
Industry leading 10 year warranty.
There’s a reason we have the industry leading DECADE warranty. It’s because of a long tried and tested history of bullet-
proof reliability. We’ve heard PA contractors tell us they still see the original Redford amplier still in service in schools.
We offer this comprehensive parts & labour warranty on almost every Australian Made Redback public address product.
This offers both installers and end users peace of mind that they will receive prompt local servicing in the rare event of any
problems.
Published by Altronic Distributors
© 2022 Altronic Distributors

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Redback® A 4505C Lockdown Timer with Network Access
CONTENTS
1.0 Overview Page
1.1 Introduction 4
1.2 Features 4
1.3 What’s in the box 4
1.4 Front panel guide 5
1.5 Rear panel connections 6
2.0 Setup
2.1 Initial Setup 8
2.2 Lockdown, Fire and Bell Switches 8
2.3 Setting the current time 8
2.4 Programming The Timing Events Using The Supplied PC Software 10
2.5 Programming The Timing Events Using The Front Button 10
2.6 Deleting A Programmed Time 11
2.7 Reset All Programmed Times 11
2.8 EV Chanegover 12
2.9 Play Prebell 12
2.10 Play Music 12
2.11 Audio Connections 12
2.12 DIP Switch settings 13
2.13 24V DC Output Connections 13
3.0 Network Access 14
4.0 Remote Wall Plates
4.1 A 2064 and A 2069 Remote Plates 15
4.2 A 4599 and A 4599V Remote Plate 16
5.0 Troubleshooting
5.1 Symptoms and Remedies 18
5.2 RJ45 Cabling Conguration 19
6.0 Firmware Update 19
7.0 Specications & Warranty 20

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1.0 OVERVIEW
1.1 INTRODUCTION
The Redback®A 4505C is a weekly timer and Lockdown and Fire Alarm controller all housed in a convenient 1RU rack
mount chassis. A total of 50 “event” switching times are available through the timing functions. Each event can be set to
turn on any single day of the week or on multiple days, from 1 sec up to 24 hours. When a timing event is activated, an au-
dio le will be played and output through the RCA line level output. There are one 99 audio playback options for the timing
events, which include the Bell, Prebell, Music and outputs 5-99. A Micro SD card which is supplied, houses all the audio les
to be played as well as storing all the timing events. The timing events can be programmed via the unit’s front buttons which
is a bit cumbersome, or they can be programmed with the supplied PC software (also available as a download from www.
altronics.com.au or www.redbackaudio.com.au).
The timing events can also be programmed to activate only a relay with no audio output. This is activated by setting the
output to the “relay” option in the programming setup. Once activated the common 24V Out will become active.
The Lockdown/Fire controller is designed around industry standard building emergency Lockdown/Fire requirements. When
connected to a paging system amplier, building occupants can be alerted and/or evacuated in the event of an emergency
e.g. re, gas leak, bomb scare, earthquake. Lockdown & Fire switches on the front of the unit are tted with safety covers
to prevent accidental operation.
The Lockdown, Fire and Bell tones and the cancel function are triggered by the front switches, or by the rear terminal con-
tacts for remote activation. Switched 24V DC Out connections are provided for Bell, Lockdown, Fire or a Common out. These
contacts are for connection of override relays in remote volume controls, warning strobes, bells etc.
The Lockdown and Fire tones are stored on a Micro SD card (Emergency Tones which conform to AS1670.4 are supplied) to
allow the user to provide any tones they require (Note: The audio les must be in MP3 format).
The Fire mode has a voice over option for the playback of a Fire message after every playback of the Fire tone. The voice over
message is also stored on the SD card and is DIP switch enabled.
The Lockdown mode has a voice over option for the playback of a Lockdown message after every playback of the Lockdown
tone. The voice over message is also stored on the SD card and is DIP switch enabled.
(Note: The audio les must be in MP3 format and are converted by the supplied PC software to work with the timer).
1.2 FEATURES
• MP3 audio format for Bell, Prebell and Music timing outputs
• MP3 audio format Emergency Tones conform to AS 1670.4 (supplied)
• Random play of MP3 les for Prebell and Music triggers
• Easy PC based timing event setup
• Local push button operation of Lockdown, Fire and Bell
• Remote triggering of Lockdown, Fire and Bell
• MP3 audio format Voice over message (Available in the Lockdown and the Fire cycle)
• Switched 24VDC output for Bell, Lockdown or Fire mode
• Pluggable screw terminal connections
• Auxiliary level output
• Battery backup of current time
• 24V DC operation
• Standard 1U 19” rack mount case
• Suitable for any amplier with an auxiliary input
• 10 Year Warranty
• Australian Designed and Manufactured
1.3 WHAT’S IN THE BOX
Redback®A 4505C Lockdown Timer
24V 2A DC Plugpack
Instruction Booklet

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Redback® A 4505C Lockdown Timer with Network Access
1.4 FRONT PANEL GUIDE
Fig 1.4A shows the layout of the A 4505C front panel.
Fig 1.4A
1 Lockdown Tone Activation Switch
This switch is used to activate the Lockdown tone. It may need to be pressed for up to 2 seconds to activate.
2 Fire Tone Activation Switch
This switch is used to activate the Fire tone. It may need to be pressed for up to 2 seconds to activate.
3 Bell Tone Activation Switch
This switch is used to activate the Bell tone.
4 Cancel Tone Activation Switch
This switch is used to cancel the Lockdown, Fire or bell tone. It may need to be pressed for up to 2 seconds to
activate.
5 Status LEDS
Prebell LED - This LED indicates when the Prebell is active.
Music LED - This LED indicates when an MP3 from the Music Folder is active.
Other LED - This LED indicates when an MP3 from one of the Music Folders 5 - 99 is active.
6 Menu and Navigation Switches
These switches are used to navigate the menu functions of the unit.
7 Isolate Switch
This switch is used to isolate the timing functions of the unit. Note: When this is enabled the Lockdown, Fire and
Chime buttons and remote triggers will still function.
8 LCD Display
This displays the current time and other timing functions.
9 Micro SD Card
This is used to store the audio les for playback of the timing events and the PC programming software.
10 Fault Indicator
This LED indicates that the unit has a fault.
11 On Indicator
This LED indicates the unit is ON.
12 Standby Switch
When the unit is in standby mode this switch will illuminate. Press this button to switch the unit ON. Once the
unit is ON the On indicator will illuminate. Press this switch again to put the unit back in standby mode.
24 Hour 7 Day Timer
A 4500
Lockdown Timer
A 4505B
1 2 3 4 5 7
689 10 11
FireLockdown Bell Cancel
Isolate
Menu Enter
Hold for 2 seconds Hold for 2 seconds Hold for 2 seconds
Prebell
Music
Other
12
On Standby
Micro SD Card Power/
Fault

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1.5 REAR PANEL CONNECTIONS
Fig 1.5 shows the layout of the A 4505C rear panel.
Fig 1.5
1 Common 24V Out
This is a common 24V DC output which is activated when any of the Prebell, Bell, Music, Lockdown or Fire tones
are activated. The terminals provided can be used for “Normal” or “Failsafe” modes (see section 2.12 for more
details).
2 Fire 24V Out
This is a 24V DC output which is activated when the Fire tone is activated. The terminals provided can be used
for “Normal” or “Failsafe” modes (see section 2.12 for more details).
3 Lockdown 24V Out
This is a 24V DC output which is activated when the Lockdown tone is activated. The terminals provided can be
used for “Normal” or “Failsafe” modes (see section 2.12 for more details).
4 Bell 24V Out
This is a 24V DC output which is activated when the Bell tone or relay only (No MP3 option) is activated. The
terminals provided can be used for “Normal” or “Failsafe” modes (see section 2.12 for more details).
5 Network Adapter
This RJ45 port is for connection of a Redback® proprietry adaptor board. This allows connection to an ethernet
network. The Redback A 4498 Network connection pack is required (see section 3.0 for details).
6 Backup Battery Switch
Use this switch to activate the backup battery. (Note: The backup battery only backs up the current time).
7 Backup Battery
Replace this battery with a 3V CR2032 only. Remove by pulling the battery.
Note: The positive side of the battery faces upward.
8 Lockdown/Fire Volume
Adjust this trimpot to adjust the Alert and Evacuation tones playback volume.
9 Bell Volume
Adjust this trimpot to adjust the Bell playback volume.
10 Music Volume
Adjust this trimpot to adjust the Music playback volume.
11 Voice-over Volume
Adjust this trimpot to adjust the message voice-over playback volume.
12 PreBell Volume
Adjust this trimpot to adjust the PreBell playback volume.
1 2 3 4 5 8 9 10 11 12 13
14
21 19
22
23 15
16
17
Mic
Volume
To Paging
Console
To Wall Plate Adapter
CR2032
Backup Battery Holder
(Use 3V CR2032 Battery Only)
Manufactured in Australia
By Altronic Distributors Pty. Ltd.
N/C
N/O
L
R
Audio
Out
Prebell
Level
V/Over
Level
DIP Switches
Common
24V Out
IMPORTANT NOTE
Ensure power is switched off when
adjusting DIP switches. New
settings will be effective when
power is switched back on.
N/C
N/O
Fire
24V Out
N/C
N/O
Lockdown
24V Out
N/C
N/O
Bell
24V Out
+
-
24V
DC In
+_
24V
DC In
Music
Level
Bell
Level
Lock/Fire
Level
1 2 3 4 5 6 7 8
Battery
Backup
Cancel
Trigger
Fire
Trigger
Lockdown
Trigger
Bell
Trigger
ON
OFF
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1 2 3 4 5 6 7 8
Outputs limited to 120mA maximum current draw
6 7
20 18

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Redback® A 4505C Lockdown Timer with Network Access
13 Audio Out RCA Connectors
Connect these outputs to the input of the background music amplier.
14 Bell Contact
These contacts are for remote triggering of the Bell tone. These could be triggered by a remote switch or other
closing contact.
15 Lockdown Contact
These contacts are for remote triggering of the Lockdown tone. These could be triggered by a remote switch or
other closing contact.
16 Fire Contact
These contacts are for remote triggering of the Fire tone. These could be triggered by a remote switch or
other closing contact.
17 Cancel Contact
These contacts are for remote triggering of the cancel function. These could be triggered by a remote switch or
other closing contact.
18 Mic Volume
Adjust this trimpot to adjust the Paging Microphone volume (Microphone currently not available).
19 RJ45 interface
This RJ45 port is for connection of a microphone paging console (currently not available).
20 RJ45 interface
This RJ45 port is for connection to the A 4599 or A 4599V wall plates.
21 Dip Switches
These are used to select various options. Refer to DIP Switch Settings section.
22 24V DC Input (Backup)
Connects to a 24V DC backup supply with at least 1 amp current capacity. (Please observe the polarity)
23 24V DC input
Connects to a 24V DC Plugpack with 2.1mm Jack.

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2.0 SETUP GUIDE
2.1 INITIAL SETUP
Press the Power/Standby button on the front of the unit. When the unit is in standby mode this switch is illuminated Red.
Once pressed the unit will power up and the Blue “On” indicator will illuminate.
Once powered up, the LCD on the front of the unit will illuminate and display the version of rmware installed on the unit.
(Note: Check the redbackaudio.com.au or altronics.com.au websites for the latest Firmware updates. Refer to section 5.0
for help installing rmware updates).
A series of checks will then be carried out. These include, the conrmation of default audio les required for proper opera-
tion and the presence of a correct conguration le.
Out of the box the A 4505C comes supplied with default audio les installed for the Lockdown, Fire, Bell, Prebell, Music and
Voice Over functions. If these les are missing or corrupt the unit will not continue. All of this information is stored on the
Micro SD card.
Note: If the unit fails to start correctly the Micro SD card may not be inserted correctly or may need to be checked (refer to
the Redback Programming Guide).
2.2 LOCKDOWN, FIRE AND BELL SWITCHES
The Lockdown, Fire and Bell switches on the front of the unit all work in momentary mode. ie. The Lockdown tone will
continue to sound after the Lockdown switch is momentarily pressed and the Fire tone will continue to sound after the Fire
switch is momentarily pressed. There is an automatic Lockdown to Fire switch-over option associated with the front panel
switches (refer to section 2.8).
Note 1: The tone that is being sounded (ie Lockdown, Fire, bell) will be indicated by the illumination of the relevant front
panel indicator.
Note 2: To cancel a tone either use the remote cancel contacts or the front cancel button. Note the cancel button will need
to be depressed for 2 seconds. This is to prevent accidental cancelling of a tone.
The Lockdown, Fire and Bell tones are stored on the supplied SD card. Separate folders are supplied on the SD card for each
tone. It is up to the user to provide the MP3 les (they must be in MP3 format) for each of the tones. A library of sample
MP3 les is supplied (in the #LIBRARY# folder). See section 2.1 for more details.
NOTE: The unit will display an MP3 error message on the screen if any of the folders on the SD card are left empty. I.e. the
Lockdown, Bell, Fire, Music, Prebell and Voice folders must all have an MP3 le inside.
Once these Lockdown, Fire and Bell outputs are activated, the corresponding 24V switched outputs will become active (refer
to section 2.6 for more details)
2.3 SETTING THE CURRENT TIME
If the unit starts up correctly and no error messages are displayed, the unit will display the current time on the top line of the
LCD and the next event on the bottom line as shown in gure 2.3a.
Fig 2.3a
When this screen is displayed the unit is running in “AUTO MODE” and therefore all outputs will work as programmed.
However if the unit is in any of the sub menu’s (Menu Mode) the unit will no longer respond to any event that has been
programmed to occur.
00:00:00 Mon
NO TIME --:--:--
SPECIAL NOTE ABOUT “AUTO MODE” OPERATION
If the timer is not displaying the main clock screen, where the time is changing, the unit is not running in
“Auto Mode”. This means it will not be checking any of the programmed events and hence will not activate
any outputs automatically.
Essentially this means that as soon as the Menu button is pressed the unit is no longer in “Auto Mode”.
Make sure to return to the main screen by exiting all menu’s when not making changes.

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Press the “Menu” button on the front of the timer. The unit is now in “Menu Mode” and the screen should display the
“Clock Adjust” Screen. This is the rst of seven sub menu screens which are navigated by pressing the up and down buttons
as shown in Fig 2.3b. Pressing the Menu button again will exit the menu structure and return the user to the Main Screen.
Fig 2.3b
MENU
2)TIMES ADJUST
MENU
1) CLOCK ADJUST
MENU
3)DELETE TIMES
MENU
5)EV CHANGEOVER
00:00:00 Mon
NO TIME__00:00:00
Menu
Main Screen
Press the UP and DOWN
buttons to scroll up and
down.
Enter Press the ENTER
button to make your
selection
Menu Press the MENU
button to exit at any
time.
MENU
4)RESET ALL TIMES
MENU
7)PLAY MUSIC
MENU
6)PLAY PREBELL
SPECIAL NOTE ABOUT “AUTO MODE” OPERATION
If the timer is not displaying the main clock screen, where the time is changing, the unit is not running in
“Auto Mode”. This means it will not be checking any of the programmed events and hence will not activate
any outputs automatically.
Essentially this means that as soon as the Menu button is pressed the unit is no longer in “Auto Mode”.
Make sure to return to the main screen by exiting all menu’s when not making changes.

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Select the CLOCK ADJUST sub menu by presing the “Enter” button.
After selecting this option, the screen as shown in Fig 2.3c should appear.
Fig 2.3c
The cursor will be positioned over the hour section of the time. Use the up and down buttons to change the hour and then
press the “Enter Button” to conrm the hour. The cursor will move to the minutes section of the time. Use the up and down
buttons to change the minutes and then repeat the process again for the seconds. Once the seconds have been updated
the cursor will move to the day of the week. Use the up and down buttons again to change the day and then press enter
to conrm. The time is now set.
2.4 PROGRAMMING THE TIMING EVENTS USING THE SUPPLIED PC SOFTWARE
Refer to the Redback Timer Programming Guide.
2.5 PROGRAMMING THE TIMING EVENTS USING THE FRONT BUTTONS
In order to set up the timing events, the station (or event) times will need to be programmed. This can be achevied by using
the buttons on the front of the unit.
Select the “TIMES ADJUST” option from the menu (refer to gure 2.3b). This option allows the user to enter the Station
(Event) information which includes the event “Turn on time”, “Period” and “Output”.
After selecting this option, the screen as shown in Fig 2.5a should appear.
Fig 2.5a
The top left text is the time event number. Up to 50 events can be programmed into the A 4500C. Pressing the “up” and
“down” buttons at this stage will move up and down through the events 1- 50. The top right text indicates that TIME1
(Event1) is currently disabled. The bottom left text refers to the time this event will happen (i.e. the “Start” Time).
Press the “Enter” button to edit this event, or press the “Menu” button to exit.
Pressing the Enter button will take you to the “Editing Time” screen (Refer to g 2.5b). This is where the event “Start” time
is entered.
Fig 2.5b
The cursor will be positioned over the hour section of the time. Use the up and down buttons to change the hour and then
press the “Enter Button” to conrm the hour. The cursor will move to the minutes section of the time. Use the up and down
buttons to change the minutes and then repeat the process again for the seconds. Once the seconds have been updated
the screen will change to the “Period” set screen (Refer to g 2.5c) . This is where the duration of the event is recorded.
Fig 2.5c
EDITING CLOCK
00:00:00 Mon
TIME1 DISABLED
00:00:00 EDIT?
EDITING TIME1
START 00:00:00
EDITING TIME1
PERIOD 00:00:00

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Once again, use the up and down buttons to set the hour, minutes and seconds and press enter when nished. Once the
period has been set, the desired output for this event is to be set using the “Output” screen (See g 2.5d).
Fig 2.5d
The output defaults to Disabled. Scroll through the other options by using the up and down buttons. The Output can be set
to Prebell, Bell, Music, No MP3/Relay Only or outputs 5-99. These outputs correspond to the audio les located on the Micro
SD card which are congured by the Timer Programming Software.
(Note: Direct MP3 le manipulation on the Micro SD card is no longer available).
Once the desired output for the event has been set, press the enter button to move to the next screen (See g 2.5e).
Fig 2.5e
This is where the days of the week this event will occur are entered. The top right line of text refers to the days of the week,
Monday through to Sunday. The line of text below this sets each day “ON” or “OFF”. Use the up and down buttons to set
the day to Y for “ON” and N for “OFF”.
Once the days of the week are set, press the enter button to conrm and be returned to the main menu. Repeat this process
for any other events to be programmed.
This process of entering the events can be quite time consuming so it is recommended using the PC software (Redback
Weekly Timer Programmer.exe).
2.6 DELETING A PROGRAMMED TIME
Select the “DELETE TIMES” option from the menu (refer to gure 2.3b).
After selecting this option, the screen as shown in Fig 2.6 should appear.
Fig 2.6
From this point the “Up” and “Down” buttons can be used to scroll through the different times, or press the “Enter” but-
ton to delete this time. After deleting the time, a message will indicate that the time has been cleared and the next time
will then be displayed on the screen. Press “Enter” to delete, “Menu” to exit or the “Up” and “Down” buttons to scroll to
another time.
2.7 RESET ALL PROGRAMMED TIMES
Select the “RESET ALL TIMES” option from the menu (refer to gure 2.3b).
After selecting this option, the screen as shown in Fig 2.7 should appear.
Fig 2.7
EDITING TIME1
OUTPUT PREBELL
DAYS- MTWTFSS
NNNNNNN
TIME1 PREBELL
07:55:00 DELETE?
RESET ALL TIMES
UP=YES / DN = NO

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Press the “UP” button to reset all the times programmed and stored on the Micro SD card. Press the “No” button to exit
without resetting the times.
2.8 EV CHANGEOVER
Select the “EV CHANGEOVER” option from the menu (refer to gure 2.3b).
After selecting this option, the screen as shown in Fig 2.8 should appear.
Fig 2.8
This option allows the user to enter the automatic switch over time between the Alert and Evac cycles.
NOTE: This affects the front panel Alert and Evac buttons and the rear Alert and Evac contacts.
Press the “UP” and “DOWN” buttons to scroll through the various times available and press enter when the desired switch-
over time is highlighted. The changeover times go up in 10 second intervals up to 600 seconds.
NOTE: If the changeover time is set to “0” the changeover will be de-activated and therefore the unit will not
switch over from the Alert cycle to the Evac cycle automatically.
2.9 PLAY PREBELL
Select the “PLAY PREBELL” option from the menu (refer to gure 2.3b).
After selecting this option, the screen as shown in Fig 2.9 should appear.
Fig 2.9
The Audio File associated with the “Pre bell” output will sound. Press the cancel button on the front of the unit to cancel.
2.10 PLAY MUSIC
Select the “PLAY MUSIC” option from the menu (refer to gure 2.3b).
After selecting this option, the screen as shown in Fig 2.10 should appear.
Fig 2.10
The Audio File associated with the “Music” output will sound. Press the cancel button on the front of the unit to cancel.
2.11 AUDIO CONNECTIONS
Audio Output:
This output consists of stereo RCA sockets with an output of 0dBm into a 600Ω input. This is suitable for most PA
amplier auxiliary inputs.
EVAC CHANGEOVER
0 SECONDS
00:00:00
PLAYING MP3
00:00:00
PLAYING MP3

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Rear Panel Volume Controls:
The output levels of the Lockdown/Fire, Prebell, Bell, Music and Voice Over tones can all be adjusted via trimpots located on
the rear of the unit.
2.12 DIP SWITCH SETTINGS
The A 4505C has various options which are set by the DIP switches on the rear of the unit. These are outlined below and in
gure 2.11.
Switch 1
This switch is used to either loop the Bell/Prebell, or play the Bell/Prebell only once after it has been triggered.
ON = Loop, OFF = Play Once
Switch 2
DIP switch 2 enables or disables the voice over message. The voice-over message is played in between every three cycles of
the Fire tone.
ON = Enabled, OFF = Disabled
Switch 3
This switch can be used to lockout the menu button, to deter tampering with the programmed times.
ON = Menu button disabled, OFF = Menu button enabled
Switch 4
This switch can be used to lockout the front isolate button.
ON = Isolate button disabled, OFF = Isolate button enabled
Switch 5-8 Not Used
Fig 2.11
2.13 24V OUTPUT CONNECTIONS
These contacts can be used for connection of override relays in remote volume controls, or strobes for unusually noisy en-
vironments. An override relay is necessary where attenuators are used so that the Lockdown tone, Fire tone or message is
broadcast at full volume regardless of the volume setting on the individual volume control (attenuator).
Lockdown/Fire 24V Out:
These contacts are for switched 24V outputs whenever the Lockdown or Fire tones are activated. These may be used to run
external systems such as strobes in unusually noisy environments, or override relays in remote volume controls.
When this output becomes active, 24V will appear between the N/O contact and the GND contact. When this output is not
active 24V will appear between the N/C contact and the GND.
Bell 24V Out:
These contacts are for switched 24V outputs whenever the Bell or Relay Only (No MP3 option) are activated These contacts
are for operating an external relay used to operate something like a lunch bell etc.
When this output becomes active, 24V will appear between the N/O contact and the GND contact. When this output is not
active 24V will appear between the N/C contact and the GND.
Common 24V Out:
These contacts are for switched 24V outputs whenever the Lockdown, Fire, Bell, Prebell or Relay Only (No MP3 option) tones
are activated. When this output becomes active, 24V will appear between the N/O contact and the GND contact. When this
output is not active 24V will appear between the N/C contact and the GND.
IMPORTANT NOTE:
Ensure power is switched off when adjusting DIP switches.
New settings will be effective when power is switched back on.
ON OFF
1
3Disable Menu Options
SW
DIP SWITCH SETTINGS
5-8 NOT USED
Enable Menu Options
Loop PreBell/Bell Until Cancelled Play Prebell/Bell Once
ON OFF
2Voice Over Enabled
SW
Voice Over Disabled
4Disable Isolate Switch Enable Isolate Switch

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Redback® Proudly Made In Australia14
Redback® A 4505C Lockdown Timer with Network Access
3.0 NETWORK ACCESS
The Redback® A 4505C has been upgraded from previous versions to now include access via a network connection. The
unit is connected with the addition of the Redback® A 4498 Network Connection Pack. With the upgraded PC software
all the event timing and audio le selection can be adjusted remotely.
Note: Audio les cannot be transferred via this connection. All audio les must be loaded onto the supplied Micro SD card
via the PC software. These les are stored in a Library on the SD card and can then be selected remotely.
Figure 3.1 below demonstrates how to connect the timer to a network via the Redback® A 4498 Connection Pack. The
pack includes a serial to ethernet converter, a proprietry adaptor board, a DC power lead and a short CAT6 lead for con-
nection between the A 4505C and the Adaptor board. The Serial to Ethernet Converter requires some conguration which
is outlined in the A 4498 instruction manual.
Once the Serial To Ethernet Converter setup is complete and all required connections made, the unit should now be acces-
sible via the PC software. Refer to the supplied Software Programming Guide for more information.
Note: An IT administrator or someone experienced with network protocols wil be required to setup the net-
work access.
Fig 3.1 Connecting the timer to a network via the Redback® A 4498 Connection Pack
Mic
Volume
To Paging
Console
To Wall Plate Adapter
CR2032
Backup Battery Holder
(Use 3V CR2032 Battery Only)
Manufactured in Australia
By Altronic Distributors Pty. Ltd.
N/C
N/O
L
R
Audio
Out
Prebell
Level
V/Over
Level
DIP Switches
Common
24V Out
IMPORTANT NOTE
Ensure power is switched o when
adjusting DIP switches. New
settings will be eective when
power is switched back on.
N/C
N/O
Fire
24V Out
N/C
N/O
Lockdown
24V Out
N/C
N/O
Bell
24V Out
+-
24V
DC In
+_
24V
DC In
Music
Level
Bell
Level
lock/Fire
Level
1 2 3 4 5 6 7 8
Battery
Backup
Cancel
Trigger
Fire
Trigger
Lockdn
Trigger
Bell
Trigger
ON
OFF
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1 2 3 4 5 6 7 8
Outputs limited to 120mA maximum current draw
Network
Serial Device Server
(Altronics D 4231)
Ethernet
RS485/422
DC 9-54V
Connect to the red RJ45 port.
Connect to Ethernet
network
Proprietry adaptor board
DC Power Lead
(Supplied)

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Redback® A 4505C Lockdown Timer with Network Access
4.0 REMOTE WALL PLATES
There are a number of wall plates which can be connected to the A 4505C for remote triggering of the Lockdown, Fire
and Bell tones and for remotely cancelling any tones which may be active.
4.1 A 2064 and A 2069 Remote Plates
A 2064 A 2069
The Redback®A 2064 wall plate provides a remote means of triggering the Lockdown, Fire and cancel functions of the
Redback® A 4505C. Connection from the A 2064 is made to the A 4505C via a minimum of 6 wires as shown in Fig 4.1.
The Redback®A 2069 wall plate provides a remote means of triggering the Lockdown, Fire, Bell and cancel functions of
the Redback® A 4505C. Connection is made from the A 2069 to the A 4505C via a minimum of 8 wires as shown in Fig
4.2.
If standard Cat5/6 cable is used for the wiring, the plates can be located up to 30m away from the main unit.
(Note: The A 2064 and A 2069 plates uses screw terminal connections). This can be increased to 100m using heavier
guage cable, which reduces the voltage drop across this distance and ensures the switch leds illuminate.
Fig 4.1 Hard wired connection between the A 2064 and A 4505C
Cancel
Switch
Evac
Switch
Alert
Switch
Alert
Lamp
Evac
Lamp
- + - +
N/C
N/O
Common
24V Out
N/C
N/O
Fire
24V Out
N/C
N/O
Lockdown
24V Out
N/C
N/O
Bell
24V Out
Cancel
Trigger
Fire
Trigger
Lockdn
Trigger
Bell
Trigger
Outputs limited to 120mA maximum current draw
A 4505B LOCKDOWN TIMER
A 2064 REMOTE
WALL PLATE
Evac CancelAlert
- + - + - + - +

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Redback® A 4505C Lockdown Timer with Network Access
The Lockdown/Fire/Cancel switches on the Redback® A 2064 wall plate are connected to the corresponding
contacts on the rear of the Redback® A 4505C. While the Lockdown and Fire LED’s on the wall plate are connected to the
Lockdown and Fire 24V outputs of the Redback® A 4505C.
A mimimum of six wires can be used on the A 2064 if the ground connections of the Lockdown and Fire 24V outputs and
the Lockdown/Fire and cancel switch grounds are linked together (see Fig 4.2).
Fig 4.2 Hard wired connection between the A 2069 and A 4505C
The Lockdown/Fire/Chime/Cancel switches on the Redback® A 2069 wall plate are connected to the corresponding
contacts on the rear of the Redback® A 4505C. While the Lockdown, Fire and Bell LED’s on the wall plate are connected
to the Lockdown, Fire and Bell 24V outputs of the Redback® A 4505C.
The cancel LED is not connected.
A mimimum of eight wires can be used if the ground connections of the Lockdown, Fire and Bell 24V outputs are linked
with the Lockdown, Fire, Chime and Cancel switch grounds (see Fig 4.2).
4.2 A 4599 and A 4599V Remote Plates
The Reback® A 4599 and A 4599V wall plates allow a remote means of triggering the Lockdown, Fire and Bell tones
and the cancel function. The switches are momentary operation and must be pressed for up to 3 seconds to activate. The
switches have protective “ip up” covers to prevent accidental operation.
Fig 4.3 A 4599 Fig 4.4 A 4599V
Evac
Alert
Chime Cancel
A 4505B LOCKDOWN TIMER
Alert
Switch
- + - +
Chime
Switch
Evac
Switch
Alert
Lamp
Evac
Lamp
Cancel
Switch
A 2069 REMOTE WALL PLATE
- +
Chime
Lamp
N/C
N/O
Common
24V Out
N/C
N/O
Fire
24V Out
N/C
N/O
Lockdown
24V Out
N/C
N/O
Bell
24V Out
Cancel
Trigger
Fire
Trigger
Lockdn
Trigger
Bell
Trigger
Outputs limited to 120mA maximum current draw
- + - + - + - +

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Redback® A 4505C Lockdown Timer with Network Access
Connection is made to the Reback® A 4505C via standard Cat5e cabling as shown in Fig 4.5. There are two RJ45 ports on
the rear of the wall plate, either of which can be used.
Only one Reback® A 4599 or A 4599V wall plate is allowed to be connected to the Reback® A 4505C via the RJ45 port.
Fig 4.5
CAT5e cable
(Max 300 Metres)
A 4599 Remote
Wall Plate
Evac
Alert
Chime Cancel
Mic
Volume
To Paging
Console
To Wall Plate Adapter
CR2032
Backup Battery Holder
(Use 3V CR2032 Battery Only)
Manufactured in Australia
By Altronic Distributors Pty. Ltd.
N/C
N/O
L
R
Audio
Out
Prebell
Level
V/Over
Level
DIP Switches
Common
24V Out
IMPORTANT NOTE
Ensure power is switched off when
adjusting DIP switches. New
settings will be effective when
power is switched back on.
N/C
N/O
Fire
24V Out
N/C
N/O
Lockdown
24V Out
N/C
N/O
Bell
24V Out
+
-
24V
DC In
+_
24V
DC In
Music
Level
Bell
Level
Lock/Fire
Level
1 2 3 4 5 6 7 8
Battery
Backup
Cancel
Trigger
Fire
Trigger
Lockdown
Trigger
Bell
Trigger
ON
OFF
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1 2 3 4 5 6 7 8
Outputs limited to 120mA maximum current draw

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Redback® Proudly Made In Australia18
Redback® A 4505C Lockdown Timer with Network Access
5.0 TROUBLE SHOOTING
5.1 SYMPTOMS AND REMEDIES
SYMPTOMS
PC SOFTWARE WILL NOT RUN
ERROR1 (SD card not found)
ERROR2 (SD card not formatted properly)
ERROR4 (Cannot nd an MP3 to play)
ERROR7 (Cannot Play MP3)
ERROR8 (Fault with Conguration File)
Power switch is illuminated Red but unit doesn’t work
Unit will not play MP3 les.
Unit doesn’t play an MP3 at the appointed time.
Alarm times have been updated by user but the times don’t
change.
REMEDIES
The PC software for this product may not run on all PC’s.
The .NET framework on the PC has to be updated to
.NET Framework 4. Available for download on the
microsoft website.
CHECK SD CARD HAS BEEN INSERTED CORRECTLY
CHECK SD FORMATTED CORRECTLY
CHECK MP3 FILES INSTALLED
CHECK FORMAT OF MP3 (It cannot be WAV or AAC)
MP3 les cannot be “Read Only” See page 9.
Note 1: MP3 les should have the following specications
for optimum performance. 128kbps, 44.1kHz, 32bit, VBR or
CBR, Stereo (even better as mono).
CHECK CONFIGURATION FILE (Incorrect time??)
The unit is in standby mode. Press the Power/Standby
switch. The unit is ON when the Blue ON LED is illuminated.
Make sure all MP3 les are not “Read Only”. See page 9.
This could be caused by MP3 les which are Read Only. The
unit will attempt to play the le but not be able to play it,
hence the MP3 will not be played at the appointed time.
The times are saved to a le named “cong.cnf”. This le
cannot be named anything else. It must also be saved to
the root folder of the SD card.

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Redback® A 4505C Lockdown Timer with Network Access
5.2 RJ45 cabling conguration for system components
(568A ‘Straight through’)
System components are connected using “pin to pin” conguration RJ45 data cabling as shown in g 5.2. When installing
ensure all connections are veried with a LAN cable tester before switching any system component on.
Failure to follow the correct wiring conguration may result in damage to system components.
568A
1 TX+
2 TX-
3 RX +
4
5
6 RX-
7
8
StraightThrough
(both ends)
Pins Face Upwards
1 TX+
2 TX-
3 RX +
4
5
6 RX-
7
8
Fig 5.2
WARNING
System components are connected using standard “pin to pin”
conguration RJ45 data cabling. When installing ensure all connections
are veried before switching any system component on.
Failure to follow the correct wiring conguration may result in damage to
system components.
6.0 FIRMWARE UPDATE
It is possible to update the rmware for this unit by downloading updated versions from www.altronics.com.au or
redbackaudio.com.au.
To perform an update, follow these steps.
1) Download the Zip le from the website.
2) Remove the SD card from the A 4505C and insert it into your PC. (Follow the steps on page 8 to open the SD card).
3) Extract the contents of the Zip le to the root folder of the SD Card.
4) Rename the extracted .BIN le to update.BIN.
5) Remove the SD card from the PC following windows safe card removal procedures.
6) With the power lead removed from the rear of the unit, insert the Micro SD card back into the A 4505C.
7) Reconnect power to the A 4505C and turn ON. The unit will check the Micro SD card and if an update is required the
A 4500C will perform the update automatically.

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Redback® Proudly Made In Australia20
Redback® A 4505C Lockdown Timer with Network Access
7.0 SPECIFICATIONS
OUTPUT LEVEL:............................................0dBm
DISTORTION:..............................................0.01%
FREQ. RESPONSE:...........................140Hz - 20kHz
SIGNAL TO NOISE RATIO:
Lockdown/Fire/Chime:..........-70dB typically
OUTPUT CONNECTORS:
Audio Output:...............RCA Stereo Socket
Common 24V DC Out:.......Screw Terminals
Lockdown 24V DC Out :... Screw Terminals
Fire 24V DC Out:................Screw Terminals
Bell 24V DC Out:................Screw Terminals
PLEASE NOTE:
Output loads limited 0.12Amp each
INPUT CONNECTORS:
24V DC Power:..................Screw Terminals
24V DC Power:..................2.1mm DC Jack
Remote Lockdown, Fire, Bell, Cancel:
.................Screw Terminals
MUTING:.............Via Microphone Switch Contact
CONTROLS:
Lockdown/Fire:.......................Rear Volume
Voice over:..............................Rear Volume
Bell:........................................Rear Volume
Prebell:...................................Rear Volume
Music:....................................Rear Volume
Power:..................................On/Off Switch
Lockdown Switch:..Illuminated Push Switch
Fire Switch:............Illuminated Push Switch
Bell Switch:...........Illuminated Push Switch
Cancel Switch:.........................Push Switch
INDICATORS:.............Power on, MP3 error, Prebell
MP3 FILE FORMAT: .......128kbps, 44.1kHz, 32bit,
VBR or CBR, Stereo (even better as mono).
POWER SUPPLY:....................................... 24V DC
DIMENSIONS:≈..................... 482W x 175D x 44H
WEIGHT: ≈................................................. 2.1 kg
COLOUR: .....................................................Black
* Specications subject to change without notice
All Australian made Redback products are covered by a 10 year warranty.
Should a product become faulty please contact us to obtain a return authorisation number. Please ensure you have all the
relevant documentation on hand. We do not accept unauthorised returns. Proof of purchase is required so please retain
your invoice.