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This section is intended as a basic inventory of components that can be used in an ACS system. For system design considerations, see
Section 4. For installation, configuration and programming instructions, see Section 5. For LED and Switch functions instructions, see
Section 6.
3.1 ACM-24AT and AEM-24AT
Annunciator Control Module
touch-pad switch and two LEDs: the point-active LED can be programmed for red, green, or yellow
trouble LED is yellow. The keypad has a system trouble LED, an On-line/Power LED, and a local piezo sounder
with a silence/acknowledge switch for audible indication of alarm and trouble conditions at each annunciator.
Height = 8.375" (21.27 cm), Width = 4.37" (11.10 cm).
Expander
The AEM-24AT is an expander board for the ACM-24AT with an additional 24 switched and con-
trolled annunciator points. An ACM-24AT can support one, two, or three expanders at the same address, to a max-
imum of 96 system points.
NOTE: The AEM-24AT cannot be used to expand the ACM-48A, ACM-16AT series, or ACM-32A series.
Power Requirements
3.2 ACM-48A and AEM-48A
Annunciator Control Module
active LED that can be programmed for red, green, or yellow
line/Power LED, and a local piezo sounder with a silence/acknowledge switch for audible indication of alarm and
trouble conditions at each annunciator. Height = 8.375" (21.27 cm), Width = 4.37" (11.10 cm).
Expander The AEM-48A is an expander board for the ACM-48A with an additional 48 switched and controlled
annunciator points. An ACM-48A can support one expander at the same address for a maximum of 96 system
points. Note: The AEM-48A cannot be used to expand the ACM-24AT, ACM-16AT series, or ACM-32A series.
Power Requirements 24VDC nominal, 27.6VDC max, 70mA max current.
3.3 ACM-16AT Series
3.3.1 Control Modules
2
ACM-16AT
The Annunciator Control Module-16AT contains 16 red point active and 16 yellow trouble LEDs, 16
momentary touch-pad switches for controlling each point, a system trouble LED, an On-line/Power LED, and a
local piezo sounder with a silence/acknowledge switch for audible indication of alarm and trouble conditions at
each annunciator. Height = 8.375" (21.27 cm), Width = 4.375" (11.11 cm). In Canada this module must be used to
annunciate the fire alarm input points/zones only.
2
ACM-16ATG
Same as the ACM-16AT, except that On/Alarm LEDs are green (green On/Alarm and yellow Trou-
ble). In Canada this module may be used to annunciate notification appliance circuit activation or other output cir-
cuit/zone activation.
2
Same as the ACM-16AT, except that all LEDs are yellow (yellow On/Alarm and yellow Trouble). In
ACM-16ATY
Canada this module must be used to annunciate supervisory and burglary signals from associated points/zones.
2
ACM-16ATCS4
(for use in Canada)
four yellow point active, and 16 yellow trouble LEDs, 16 momentary touch-pad switches for controlling each
point, a system trouble LED, an On-line/Power LED, and a local piezo sounder with a silence/acknowledge switch for audible indication of
alarm and trouble conditions at each annunciator. In Canada this module must be used to annunciate supervisory and burglary signals from
associated points/zones.
2
ACM-16ATCS
(for use in Canada)
16 yellow trouble LEDs, 16 momentary touch-pad switches for controlling each point, an On-line/Power LED, and a local piezo sounder
with a silence/acknowledge switch for audible indication of alarm and trouble conditions at each annunciator. In Canada this module must be
used to annunciate supervisory and burglary signals from associated points/zones.
1. Check local regulations when programming colors; some jurisdictions restrict color choice. For example, in Canada red
indicates active alarm inputs; yellow indicates supervisory, burglary or trouble signals; green indicates the presence of power,
or an activated output.
2. In Canada the color red must be used to indicate active alarm inputs. Yellow indicates supervisory, burglary or trouble signals.
Green indicates the presence of power, or an activated output.
ACS Manual — P/N 15842:N3 5/4/2022
Section 3: Product Overview
The rubber keypad of the ACM-24AT has 24 annunciator points, each with a
24VDC nominal, 27.6VDC max, 70mA max current.
The rubber keypad of the ACM-48A has 48 annunciator points, each with a point-
The Annunciator Control Module 16ATCS4 contains 12 red point active,
The Annunciator Control Module 16ATCS contains 8 red point active and 8 yellow point active LEDs,
2
. The keypad has a system trouble LED, an On-
1
; the point-
11
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