The MMF-302 Interface Module is intended for use in addressable two-wire systems, where the individual address of each module is selected using the built-in rotary switches. This module allows addressable panels to interface and monitor two-wire conventional smoke detectors. It transmits the status (normal, open, or alarm) of one full zone of conventional detectors back to the control panel. All two-wire detectors being monitored must be UL-compatible with this module. The MMF-302 has a panel-controlled LED indicator and can be used to replace an M302 module in existing systems.

The MMF-301 monitor module can be installed in a single gang junction box directly behind the monitored unit. Its small size and light weight allow it to be installed without rigid mounting. The MMF-301 is intended for use in intelligent, two-wire systems where the individual address of each module is selected using rotary switches. It provides a two-wire initiating circuit for normally open contact fire alarms and security devices. This module can be used to replace an M301 module in existing systems.