The Auxiliary Power Supply (APS) is a UL 864, 9th Edition listed
power supply. It is a 24 Vdc filtered-regulated, and supervised
unit that can easily be configured to provide additional notification
appliance circuits (NACs) or auxiliary power for Mass Notification/
Emergency Communication (MNEC), as well as life safety, security,
and access control applications.
The APS contains the circuitry to monitor and charge internal
or external batteries. Its steel enclosure has room for up to two
24 ampere-hour batteries. For access control-only applications,
the APS can support batteries totaling up to 65 ampere-hours in
an external enclosure. The APS has four Class B (convertible to
two Class A) NACs. These can be activated in one or two groups
from the APS’s unique dual input circuits. The APS has a doormounted AC power indicator LED.
The APS also has room for and can power a number of different
modules. These can be Signature AA-30 or AA-50 dual-channel
audio amplifiers, UIO modules and/or GSA-RELs.
The APS is available in 6.5 or 10 ampere models. Each output circuit is has a capacity of three amperes; total current draw cannot
exceed the unit’s rating.