1. Easy to Check Fiber Errors This fault locator can accurately detect and locate fiber breaks, bad connections, bends or cracks. The detector emits bright 650nm light for fiber tracking, fiber breaks or errors. 2. Excellent functions This model is easy to carry and easy to test on site. It has various functions such as constant output power, low battery prompt and long distance battery detection. 3 . Wide universal 2.5mm detector jack compatible with ST, SC and FC male connectors, various round and square fiber optic cables. 4. Long output time The battery life of the uel fault locator with strong red light output is up to 20-30 kilometers, and the high-efficiency circuit ensures stable performance. 5. Convenient Design - Its size and light weight - Pocket pen design makes it easy to carry - Use the visual fault locator to easily check fiber faults. Designed with a stainless steel head and aluminum rper to prevent drops and dust - worn bottom design prevents ESD from escaping.