INSTALLATION SHEET
721T Terminal Block Module
Description
The 721T Terminal Block Module provides an additional panel-style zone terminal block with built-in End-of-Line
(EOL) resistors. Mounting the 721T in or near the panel enclosure offers a convenient option for terminating zone
connections in one location rather than at the zone device in the field. The 721T is compatible with all DMP XR150/
XR550 Series panels.
End-of-Line (EOL) Resistors – One Resistor for each Zone and Bell Circuit
Write Zone Device Name above Zone Number
Terminal Blocks
Included Components
• One 721T PCB with foam backing
Figure 1: 721T Terminal Block Layout
Install the 721T Module
The 721T easily mounts below the panel in most DMP enclosures. When the rear center knockouts below the panel
are used, it may be necessary to mount the 721T below the knockouts.
1. Remove AC and battery power from the panel before installing the 721T.
2. Remove the tape from the 721T foam backing and press the module firmly onto the enclosure back. Alternately,
the 721T can be permanently mounted using the pre-drilled mounting holes. See Figure 2.
Connect the Terminal Blocks
Use 4-conductor wire to complete the connections between the panel, the field device, and the 721T. For reference,
use a marker to write the zone device name and number on the 721T in the white space above the zone terminals.
See Figure 1.
How to Connect the AUX Terminal Blocks
1.Connect one end of the black wire to the negative (-) AUX on the 721T and the other end to panel
terminal 10.
2.Connect one end of the red wire to the positive (+) AUX terminal on the 721T and the other end to panel
terminal 7.
14 AWG Ground Wire
to Earth Ground
J8
PROG
XR150 Panel
Battery
Start
AC AC +B –B BELLGND RED YEL GRN BLK SMK GND Z1 GND Z2 Z3 GND Z4 Z5 GND Z6 Z7 GND Z8 Z9+ Z9–Z10+Z10–
To AC
1
2
3
4
5
6
7
8
9
10
11
12 13
14
15 16
17 18
19
20 21 22
23 24
AUX
Figure 2: 721T AUX Terminal Connections
Z8
Co N/O
nta
ct
Z7
Co N/C
nta
ct
Black
Predrilled
Mounting
Hole
Red
To Battery
25 26 27 28
INSTALLATION SHEET
How to Connect N/O Contacts
Follow these steps to connect a N/O (Normally Open) contact to panel zone 8 in parallel. See Figure 2.
1.Connect the red and yellow wires to the same terminal on the N/O contact.
2.Connect the black and green wires to the other terminal on the N/O contact.
3.Connect the other end of the black wire to panel terminal 23 GND.
4.Connect the other end of the red wire to panel Z8 terminal 24.
5.Connect the other ends of the yellow and green wires to the Z8 terminals on the 721T.
How to Connect N/C Contacts
Follow these steps to connect a N/C (Normally Closed) contact to panel zone 7 in series. See Figure 2.
1.Connect the red wire to one terminal on the N/C contact.
2.Connect the yellow wire to the other terminal on the N/C contact.
3.Connect the black and green wires together.
4.Connect the other end of the black wire to panel terminal 23 GND.
5.Connect the other end of the red wire to panel Z7 terminal 22.
6.Connect the other ends of the yellow and green wires to the Z7 terminals on the 721T.
N/O Contact
XR150 Panel
25 26 27 28
Black
Red
Black
To External
Zone 7 N/C Contact
Green
23 24
Red
Z7
Co N/C
nta
ct
Zone 7 1k
EOL Resistor
20 21 22
Zone 8 1k EOL Resistor
Predrilled
Mounting
Hole
Green
19
Yellow
17 18
Z8
Co N/O
nta
ct
15 16
From
External
Zone 8
N/O Contact
Yellow
GND Z2 Z3 GND Z4 Z5 GND Z6 Z7 GND Z8 Z9+ Z9–Z10+Z10–
14
N/C Contact
To External
Zone 8
N/O Contact
From
External
Zone 7
N/C Contact
Dimensions 7.70" W x 1.65" H x 0.83" D
800 - 641 - 4282
The 721T Terminal Strip is compatible with DMP XR150/
XR550 Series panels.
INTRUSION
•
FIRE
•
ACCESS
•
NETWORKS
www.dmp.com
2500 North Partnership Boulevard
Designed, Engineered and
Assembled in U.S.A.
S p r i n g fi e l d , M i s s o u r i 6 5 8 0 3 - 8 8 7 7
16364
Compatibility
Specifications
LT-0861 © 2016 Digital Monitoring Products, Inc.
Figure 3: 721T Wired to N/O and N/C Devices