The MMF-300 Monitor Module is intended for use in intelligent,two-wire systems, where the individual address of each moduleis selected using the built-in rotary switches. It provideseither a two-wire or four-wire fault-tolerant Initiating Device Circuit(IDC) for normally-open-contact fire alarm and supervisorydevices. The module has a panel-controlled LED indicator.The MMF-300 can be used to replace M300 modules inexisting systems.
Use to monitor a zone of four-wire smoke detectors, manualfire alarm pull stations, waterflow devices, or other normallyopendry-contact alarm activation devices. May also be usedto monitor normally-open supervisory devices with specialsupervisory indication at the control panel. Monitored circuitmay be wired as an NFPA Style B (Class B) or Style D (Class A) Initiating Device Circuit. A 47K ohm End-of-Line Resistor(provided) terminates the Style B circuit. No resistor isrequired for supervision of the Style D circuit.