34 AFP-200 Instruction PN 15511:F2 10/11/99
The MMX-101 Monitor Module
The MMX-101 Monitor Module is an addressable module that is functionally and electrically identical to an
MMX-1 Monitor Module (Style B circuits only), but offered in a smaller package for mounting directly in the
electrical box of the contact-type device being monitored.
Notes on the MMX-1 and MMX-101 Monitor Modules
1. The Initiating Device Circuit is supervised and current limited to 210 µA @ 24 VDC (nominal).
2. The Initiating Device Circuit provides the following services (do not mix):
• Fire Alarm Service.
• Automatic/Manual Waterflow Alarm Service with normally open contact devices.
• Sprinkler Supervision with normally open contact devices.
• Security Service.
3. Due to wiring, the maximum loop resistance is 20 ohms.
The MMX-2 Monitor Module
The MMX-2 Monitor Module is an addressable module used to monitor a single Initiating Device Circuit of
two-wire smoke detectors. The monitored circuit may be wired an NFPA Style B (Class B) or Style D (Class
A).
MMX-2 Compatible Smoke Detectors
Reference the Device Compatibility Document for compatible two-wire smoke detectors.
Figure 2-21 NFPA Style B Initiating Device Circuit
Terminate with a SSD A2143-00 ELR (N-ELR in Canada).
Set the module address
with these switches
Loop (+) Loop ()
(Red) (Black)
IDC () IDC (+)
(Yellow) (Violet)
2.7.2 The Monitor Module, continued
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