Rugged Visual Fault Locator Kit | VFL-300Description Rugged Visual Fault Locator Kit Designed to detect fiber breakpoints, fiber leaks, poor connections, and stress points, this rugged visual fault locator is perfect for field personnel detecting faults in fiber optic cables. Features Features A 650 nm Class IIIA laser diode identifies faults in single mode and multi mode fiber up to 3 miles long. It has three different modes with constant output power: continuous wave, pulsing, and slower