The Corning Cable Systems VFL-350 Visual Fault Locator / Light Source is used to check single-mode and multimode optical fiber cables and components for faults or to locate individual fibers in a bundle. By transmitting a bright beam of red light into a fiber, breaks or improper terminations can be seen as a glowing red light. This device is especially applicable for field installation of UniCam MT-RJ and LC Connectors containing the Continuity Test Set (CTS) feature. The VFL-350 emits visible laser light of 635 nm with an output power less than 1 mW. The robust and compact metal housing make the device suitable for daily on-site use.