The Fire-Lite MMF-301 is a mini monitor module designed to supervise a Style B (Class B) circuit of dry-contact input devices.
The MMF-301 is so compact it can be mounted in a single-gang box and placed behind the monitored device. This makes for a far more aesthetically-pleasing installation. Identification technology automatically notifies the control panel that the MMF-301 is a monitor module. It receives power from a two-wire SLC loop.