Redback A 4505B Operating Manual page 6

13 Audio Out RCA Connectors
Connect these outputs to the input of the background music amplifier.
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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Redback® A 4505B Lockdown Timer
Redback® Proudly Made In Australia 7