D8125
D8125 Operation and Installation Guide
Page 9© 2004 Bosch Security Systems, Inc. 74-04247-000-N
Overview
2.0 Overview
2.1 Specifications
Operating Voltage
D8125 10.2 VDC to 14 VDC supplied by AUX POWER
D8126/D8127 7 VDC to 15 VDC supplied by the POPEX Module
Current
D8125 50 mA per POPEX Module + POPIT current
D8126/D8127 2.5 mA per POPIT Module
D9127 0.5 mA per POPIT Module
Operating Temperature
+32°F to +122°F (0°C to +50°C), @ 86% Relative Humidity
Resistance
Maximum increase of resistance on the POPIT Loop is 1000 Ω.
Maximum resistance between the POPEX Module and any POPIT is 90 Ω.
Sensor Loop Response
Time
Approximately 1 second.
POPIT sensor loops are supervised with a 33 kΩ End-Of-Line resistor:
Bosch Security Systems D106F
Low Condition Voltages
Open: 12 VDC
Normal: 6 VDC
Shorted: 0 VDC
The D9412G, D7412G, and D7212G Control Panels indicate SERVC GND FAULT on
command centers when a ground fault condition is present on the loop input. All other 9000
Series Control Panels respond to a grounded loop as an open condition.
Dimensions (H x W x D)
D8125 module: 0.75 in. x 2.88 in. x 5.0 in. (19 mm x 73 mm x 12.7 cm)
D8126 enclosure: 0.94 in. x 2.88 in. x 4.38 in. (24 mm x 73 mm x 11.1 cm)
D8127/D9127 enclosure: 0.94 in. x 1.5 in. x 3.2 in (24 mm x 38 mm x 81 mm)
UL Applications
The control panel enclosure and POPIT modules required for specific UL or NFPA ZONEX
system applications are listed below. The D8108A Attack-Resistant Enclosure meets or
surpasses the requirements for all of these applications. A D8109 Fire Enclosure can be used for
fire applications. Any mercantile combination fire and burglar system must use the
D8126T/D8127T/D9127 POPIT Module. Refer to UL 681 “Installation and Classification of
Mercantile and Bank Burglar Alarm Systems” for further details on installation requirements.
Application Control D8126/D8127/D9127
Enclosure Model
Residential
UL Household Fire D8103 U or T
UL Household Burglar D8103 U or T
Commercial
UL Local Burglar/Police Connected Burglar D8108A T*
UL Central Station Burglar Grade C D8103 T*
UL Central Station Burglar Grades B and A D8108A T*
UL Commercial Fire for Local, Central Station, D8109 U or T
Remote Station, and Electrically Accentuated Transmitter
* A model “U” POPIT mounted within a tampered enclosure can be used in place of a model
“T” POPIT.
The following describe the classification of the Bosch Security Systems modules. Please
reference the NFPA 72 for the specific details of IDC, SLC, NAC conditions.
Module
Class Style
D125B (Powered Loop Interface) B A
D129 (Dual Class A Initiation Module) A D
D192C (Bell Supervision Module) B W
D192G (Bell Supervision Module) B W
D8125 (Zone Expansion Module) B 3.5
D9127 (Point of Protection Module) B A
Table 3: Zonex Expansion Specifications
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