• Long range output distance: this visual fault locator has a strong battery output, which can travel for 20-30 kilometers. The efficient power circuit makes the power stable. • 2.5 mm universal connector: the 2.5 mm universal connector of the optical cable tester is designed to be compatible for ST, SC, and FC and interferes in both circle and square shape of different fiber optic cables. • FC/LC Adapter: Single mode 9/125UM SC Male to LC Female Adapter and FC Male to Female compatible with 30MW Optical Power Meter Visual Fault Locator. • Accurate testers: the fiber fault locator can accurately detect and locate fiber breaks, bad connections, bends, or cracks. Therefore, you can easily find the faults with this fiber cable tester tool. • Portable fiber testers: small and portable size, easy for field testing with multiple functions, features like low battery warning, long battery life, constant output power, and long-range detection.