Feature: 1. Main Purpose: This visual fault locator can accurately detect and locate fiber optic breaks, poor connections, bends, or ruptures, can operate in continuous wave or pulse mode, and emit 650nm red light for fiber optic tracking and locating. 2. Multiple Functions: This fiber optic tester has constant output power, low battery warning, long battery life, remote detection and other functions, effectively conducting fiber optic wiring and continuity checks, and generating bright light. 3. 2.5mm Connector: This tester has 2.5mm universal connector designed specifically for ST, SC, and FC, and can interfere in the circular and square shapes of different optical cables, suitable for testing single mode and multimode optic cables. 4. Stable Power Output: The visual fault locator has a strong light source output power of 30mW, with a constant output power, the strong red light propagates 30KM in the optical cable, providing stable power, continuous wave, and pulse modes. 5. Metal Structure: The fiber optic tester adopts a stainless steel head and an aluminum body, which effectively prevents collisions and dust, the grounding design of the shell can prevent ESD from effectively damaging. 6. LED Flashlight: The red light pen is a portable design that is lightweight and compact, with LED flashlight lighting, making it easy to handle dim environments and greatly improving work efficiency. 7. Applicable Fields: Suitable for comprehensive cabling system, fiber optic engineering, CATV engineering optical network maintenance, optical comm, optical measurement drive engineering, optical device production and research. Specification: Item Type: Visual Fault Locator Model: B5-30 Fiber Optic Adapter: Universal Connector Output Fiber Power: 30mW Output Wavelength: 650nm Interface: 2.5mm Universal Effective Distance: 30km Operating Temperature: -20℃-60℃ Storage Temperature: -40℃-85℃ Power Supply Battery: 1800mAh Lithium Ion Battery (built in portable). Package List: 1 x Red Light Pen1 x User Manual1 x Ceramic Core1 x Charging Cable1 x Lanyard