ADT Unimode 400 Multi-Net Installation Manual page 26

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M500CH Series Control Modules and M500M Series Monitor Modules provide an
interface between the control panel and conventional notification (M500CH) and
initiating (M500M) devices. You can set each M500CH and M500M module to
respond to an address with built-in rotary decimal switches. A blinking LED on an
M500M or M500CH indicates communication between the module and the control
panel.
Table 1-9 contains descriptions of M500CH and M500M series modules and other
addressable modules used with the control panel:
Option
Monitor Modules
(M500M, M502M)
M501M
Control Modules
(M500CH)
Loop Isolator Module
(M500X)
ADT-BGX-101L
Addressable Modules (System Sensor)
Description
Addressable Monitor Modules for monitoring conventional
initiating devices. The M500M is used for normally open
contact alarm initiating devices, such as manual pull stations,
four-wire smoke detectors, heat detectors, waterflow, security
contacts, and supervisory devices. Use the M502M for
specific two-wire smoke detectors in addition to normally
open contacts. Wire supervised circuits as NFPA Style B or
Style D circuits.
An Addressable Module that is functionally similar to an
M500M Monitor Module (Style B circuits only), but offered
in a smaller package for mounting directly in the electrical
box of the device being monitored. It does not include a
blinking LED or a magnetic test switch.
Addressable Control Modules used as Notification Appliance
Circuits (NACs) to power and supervise compatible,
UL-listed notification appliances. Wire supervised circuits as
NFPA Style Y or Style Z. Breaking the two built-in tabs
allows using the M500CH as a Form-C control relay. A
M500CH comes with a thermoplastic cover for mounting to a
4-inch square mounting box.
The M500X is an automatic switch that opens the circuit
voltage to a communications loop branch(es) whenever a fault
is detected on that circuit. The remainder of the
communications loop leading up to the M500X continues to
operate, unaffected by the fault.
A dual action addressable manual pull station featuring a
key-lock reset. The pull station includes an M501M and
responds to an address set with built-in rotary decimal
switches.
Table 1-9 Addressable Modules
Unimode 400 Installation PN 50710:A 10/22/97