Johnson Controls M500XJ Fault Isolator Module

The Johnson Controls M500XJ Fault Isolator Module is used with the IFC Intelligent Fire Alarm Control Panels (FACP) to protect the system against wire-to-wire short circuits on the SLC loops. Mount on a standard 4″ (10.16 cm) mounting junction box which is at least 2.125″ (5.398 cm) deep, or SMB500: Surface Mount Backbox.