VisiFault™ Visual Fault LocatorHigh-visibility laser speeds fiber tracing verification and diagnosis of faults The handheld VisiFault emits a bright beam of red light easily visible from a distance. It is extremely helpful when trying to trace one of many fibers either in a cable or terminated in a rack. Perform simple end-to-end continuity checks. Verify the proper polarity and orientation of fibers within a multi-fiber connector like the MT-RJ. The VisiFault can quickly illuminate fiber breaks, damaged connectors, defective splices in splice trays, and tight fiber bends in and around equipment racks. The choice of a continuous wave output mode for steady illumination or a flashing output mode makes for easier identification.

Rugged and ready
The VisiFault is built to last. The VisiFault incorporates an energy-absorbing holster over an impact-resistant case to withstand drops, impacts and rough treatment, ensuring years of trouble-free operation. Together with a heavy-duty tethered end cap to protect the fiber adapter, the VisiFault is the VFL for demanding field applications. Attach the VisiFault to your belt using a lanyard or it’s carrying case so it is always on hand when you need it. Two AA batteries furnish more than 80 hours of continuous mode battery life.

Easy connection
The universal 2.5 mm adapter makes for easy connection to SC, ST, FC, and FJ connectors. The optional 1.25 mm adapter allows for connection to LC and MU SFF connectors.

• Locates faults including tight bends, breaks and bad connectors
• Accelerates end-to-end fiber checks
• Easily verifies polarity and identifies fibers
• Features continuous and flashing modes
• Ergonomic case survives drops, impacts and vibrations
• Supports 2.5 mm and 1.25 mm SFF connectors
• Over 80 hours of battery life with two AA batteries


Part NumberDescription
VisiFault Visual Fault Locator with 2.5 mm universal adapter
NF380 Universal VisiFault Adapter for connector with 1.25 mm ferrules