FMM-1 is a standard-sized module (typically mounts to a 4" [10.16 cm] square box) that supervises either a Class A (Style D) or Class B (Style B) circuit of dry-contact input devices.
The NOTIFIER ISO-X Fault Isolator Module is used with the NFS-3030, AM2020, AFP1010, NFS-640, AFP-400, AFP-300, AFP-200, AFP-100 and System 5000 (equipped with an AIM-200 module) to protect the system