You can diagnose and repair simple fiber link problems with our visual fault locator-cable continuity tester. The laser-powered cable continuity tester locates fibers, verifies continuity and polarity. This cable continuity tester helps find breaks in cables, connectors and splices. Continuous and flashing modes make for easier identification. Compatible with 2.5mm and 1.25mm connectors for easy connection. Ruggedly constructed for demanding field-testing. Long battery life for hours of use.