Fire-Lite MMF-300 Monitor ModuleThe MMF 300 Monitor 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. It provides either a 2 wire or 4 wire fault tolerant Initiating Device Circuit (IDC) for normally open contact fire alarm or supervisory devices. The module has a panel controlled LED indicator. NOTE: The MMF 300 Monitor Module can be used to replace an M300 module in existing