[High Efficiency] Easy identification of fiber breakpoints, poor connections, bending, or cracking. Ideal for locating the correct fiber for splicing or quickly identifying faults. This 30mW visual fault locator emits a 650nm bright red light for efficient fiber tracing, routing, and continuity checking. Faults in the fiber will refract the light, producing a visible glow at the point of damage.[Excellent Functions] This fiber optic tester is ideal for field use due to its reliable performance, constant output power, multi-interface compatibility, low battery indicator, extended battery life, and long-distance detection capability. Features a super-bright output and operates using standard AA batteries for convenience.[Widely Used] Equipped with a 2.5mm universal connector designed to fit ST, SC, FC, and LC interfaces, compatible with both round and square ferrules on various fiber optic cables.[Long Output Distance] The 30mW visual fault locator delivers a powerful red laser output capable of reaching distances up to 2030 km. High-efficiency power circuitry ensures stable and consistent performance.[Crash-Proof and Dust-Proof Design] Features a stainless steel tip and aluminum body for enhanced durability against impacts and dust. The grounded case design helps protect against electrostatic discharge (ESD) damage.Battery: Two 1.5V AA batteries (not included) Model: A/B Color: Purple and black / Green and black Material: Aluminum alloy Package Contents: 1 x Fiber identifier Note: Accessories shown in images are not included unless specified. Allowable measurement error is 13 cm. Color may vary slightly due to lighting and display settings.