1 2 5 3 0 / 1 2 5 4 0 O W N E R ' S M A N U A L
P/N 447203 Issue I
V-21
Device Monitor Module (9158) ("Mini-Monitor")
The 9158 (System Sensor M501M) addressable mini-monitor module provides a Style "B" (2-wire)
initiating circuit for normally open dry contact fire alarm and supervisory (tamper) devices. The 9158's
small size and light weight design allows it to be installed inside a single gang box, or behind a device
being monitored without being rigidly mounted. The 9158 addressable mini-monitor module may be used
to monitor a single unit or a "zone" of units of "4-Wire" (separately powered) smoke detectors, manual
stations, waterflow switches, tamper (supervisory) switches or other dry, normally open contact initiation
devices.
NOTE: "2-Wire" (Zone Powered) Smoke detectors and initiation devices are not compatible.
The 9158 uses a module address between 01 and 99 on an addressable device circuit. The 9158 is
regularly scanned by the control unit and checked for its current monitored device(s) status (i.e. open
(trouble), normal (EOL), shorted (alarm)). Once the control unit has received the status data, it will
interpret and respond to this data as programmed.
NOTE:
The devices are set at the factory for address 00. This is a default code.
During installation set address to the predetermined address code.
9158 Monitor Module
Addressable
Device Circuit
Initiating
Device Circuit
Set the device address
with these switches.
(See note below)
Yellow
(-)
Black
(-)
Red
(+)
Violet
(+)
