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Initiating
Devices
19
Intelligent initiating devices
VM
Intelligent Initiating Devices
SERIES
Universal Class A/B Module
The Universal Class A/B Module is used to connect initiating, appliance, or two-wire smoke
circuits in either Class A or Class B configurations. The plug-in version can also be used as a
Class A dry contact initiating device circuit. The actual function of this module is determined
by the “personality code” selected by the installer. Up to fifteen personalities are available.
GSA-UM Universal Class A/B Module (Two-gang standard mount) Data Sheet K85001-0275
GSA-MAB Universal Class A/B UIO (Plug-in) Module Data Sheet K85001-0275
GSA-UM
Class B Input Module
The Class B Input Module is used to connect Class B normally-open Alarm, Supervisory, or
Monitor type dry contact initiating device circuits. The standard-mount version is available with
either one or two input connections. The plug-in version accepts two input connections. The
actual function of this module is determined by the “personality code” selected by the installer.
A total of four personalities are available.
GSA-CT1 Single Input Module (One-gang standard mount) Data Sheet K85001-0241
GSA-CT2 Dual Input Module (One-gang standard mount) Data Sheet K85001-0241
GSA-MCT2 Dual Input UIO (Plug-in) Module Data Sheet K85001-0241
GSA-CT1/CT2
GSA-MCT2
GSA-MAB
Waterflow/Tamper Module
The GSA-WTM Waterflow/Tamper Module is a two circuit intelligent module. Circuit 1 is for Class
B normally-open waterflow alarm switches. When the input contact is closed for approximately 16
seconds, an “alarm” signal is sent to the loop controller. Circuit 2 is for Class B normally open dry
contact supervisory and tamper switches. When the input contact is closed, an “active” signal is sent
to the loop controller. Conditions on both circuits are latched at the module.
GSA-WTM Waterow/Tamper Module (One-gang standard mount) Data Sheet K85001-0297
Isolator Module
The GSA-IM Isolator Module is an intelligent device that allows part of the data loop to con-
tinue operating in the event of a short circuit. The module can be wired into a Class A data
loop at any point. A maximum of 96 isolator modules can be installed on one circuit. If a fault
occurs, the isolator cuts power to all devices beyond the isolator on the loop. Once activated,
the line fault isolator continuously checks the faulted side of the loop to determine if the short
still exists. When the fault is cleared, the module automatically restores the entire data loop
to its normal condition.
GSA-IM Fault Isolator Module (Two-gang standard mount) Data Sheet K85001-0271
Monitor Module
The GSA-MM1 is a single-circuit intelligent module that includes a Class B normally-open dry
contact. This is used for monitoring input from devices such as fans, dampers, and doors.
When the input contact is closed, an “active” signal is sent to the loop controller. The active
condition is not latched at the module.
GSA-MM1 Monitor Module (One-gang standard mount) Data Sheet K85001-0297
GSA-IM
GSA-WTM
GSA-MM1