
Detection Systems, Inc. Copyright © 2003 Detection Systems, Inc.
130 Perinton Parkway, Fairport, New York, USA 14450-9199 DS7457 Installation Instructions
(585) 223-4060 • (888) 289-0096 • Fax: (585) 223-9180 • Technical Service: (888) 886-6189 P/N: 28448F 1/03
NOTE:
If not using the tamper circuit, connect the
orange and black tamper wires together.
Use 47 k Ω P/N: 26069
for non-fire applications.
Use 47 k Ω P/N: 28010
for fire applications.
N/C
N/O
Tamper Switch
(Normally Closed)
Alarm Contact (Normally
Open or Normally Closed)
EOL
NOTE: Bus A or Bus B may be used.
DS7436 Multiplex Expansion Module
PWR+ PWR- BUS+ BUS- PWR+ PWR- BUS+ BUS-
Orange
IMPORTANT
Do not mix Fire and Burglar zones on the same bus. Select
one bus for Fire Zones and one bus for Burglar zones.
UL Listed
Noise Suppression Diode
(P/N: 47985)
Bus
Alarm
Tamper
+
–
+
–
+
–
DS7457
Red
Black
Yellow
Black
Black
Figure 3: DS7436 to DS7400 Series Wiring
3.2 DS9400 Fire Alarm Control Panel Wiring
Alarm Contact (Normally
Open or Normally Closed)
NOTE:
If not using the tamper circuit, twist or short
orange and black tamper wires together.
47 k Ω
EOL
P/N 28010
(for fire applications)
N/C
N/O
Tamper Switch
(Normally Closed)
NOTE:
Bus A or Bus B may be used
UL Listed
Noise Suppression Diode
(P/N: 47985)
DS9431
Multiplex Expansion Module
BUS
A+
BUS
A-
BUS
B+
BUS
B-
Bus
Alarm
Tamper
+
–
+
–
+
–
DS7457
Yellow
Black
Orange
Black
Red
Black
Figure 4: DS7457 to DS9431 Contact Wiring
IMPORTANT
For UL Listed fire installations, Normally Open (N/O)
contacts must be used.
DS9431
Multiplex Expansion Module
Orange
Black
Red
Black
Tamper Switch
(Normally Closed)
BUS
A+
BUS
A-
BUS
B+
BUS
B-
Smoke -
Smoke Detector
(e.g.:DS250/MB4W)
EOL Relay
(e.g.:EOL200)
47 k
Ω
EOL P/N: 28010
DS9400M FACP
Smoke +
Either Bus A or Bus B
may be used. Refer to the
panel’s reference guide.
Bus A:
Points 009 to 128
Bus B:
Points 129 to 255
Program using MUX BUS A
without the diode installed
UL Listed
Noise Suppression Diode
(P/N: 47985)
Bus
Alarm
Tamper
+
–
+
–
+
–
DS7457
Figure 5: DS7457 to DS9431 Smoke Detector Wiring
4.0 Multiplex Programming
Consult your DS7400 Control Panel or your DS9400/
AddressiFire 255 Fire Alarm Control Panel installation
guides for programming information of the DS7457 Multiplex
Module.
IMPORTANT
For DS7400 Series panels, the DS7457 is programmed
as a sensor, not a contact.
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