Redback A 4505 Operating Manual page 7

13 Bell Contact
These contacts are for remote triggering of the Bell tone. These could be triggered by a remote switch or other
closing contact.
14 Lockdown Contact
These contacts are for remote triggering of the Lockdown tone. These could be triggered by a remote switch or
other closing contact.
15 Fire Contact
These contacts are for remote triggering of the Fire tone. These could be triggered by a remote switch or
other closing contact.
16 Cancel Contact
These contacts are for remote triggering of the cancel function. These could be triggered by a remote switch or
other closing contact.
17 Dip Switches
These are used to select various options. Refer to DIP Switch Settings section.
18 DC fuse (1A M205)
This fuse protects the internal power supply. Replace with 1A rated fuse only.
19 24V DC Input (Backup)
Connects to a 24V DC backup supply with at least 1 amp current capacity. (Please observe the polarity)
20 24V DC input
Connects to a 24V DC Plugpack with 2.1mm Jack.
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Redback® A 4505 Lockdown Timer
Redback® Proudly Made In Australia 7