Diagnose and repair simple fiber link problems with VisiFault Visual Fault Locator (VFL). Laser-powered cable continuity tester locates fibers, verifies cable continuity and polarity. Helps find breaks in cables, connectors and splices. Continuous and flashing modes make for easier identification. Integrated universal 2.5mm adapter makes for easy connection to SC, ST, FC, and FJ connectors and optional 1.25mm adapter (sold separately) allows for connection to LC and MU connectors. Rugged construction for demanding field-testing. Long battery life for hours of use.