Visual Fault Locator

High-Efficiency Fault Localization

Easily pinpoint fiber optic issues with exceptional accuracy—whether it’s breakpoints, poor splices, excessive bending, or hidden cracks. Ideal for quickly identifying the exact fiber for splicing or locating breaks in critical networks, this 30Km Visual Fault Locator streamlines fiber tracing, routing, and continuity checks. It eliminates time-consuming manual inspections, boosting work efficiency for engineers and technicians in both indoor and outdoor SCenarios.

Multi-Functional & Field-Ready Design

Tailored for on-site testing, this fiber optic tester integrates a range of practical functions to meet diverse needs. It features stable constant output power for reliable detection results, multi-interface adaptation for versatile use, and a clear low-battery warning to avoid unexpected interruptions. With an extended battery life and support for widely available AA batteries, it ensures long-lasting operation even in remote locations. The long-distance detection capability further enhances its utility for large-scale fiber networks.

Widely Compatible Universal Connector

Equipped with a 2.5mm universal connector, this detector offers seamless compatibility with ST, SC, FC, and LC adapters—covering both circular and square-shaped interfaces of various fiber optic cables. No need for multiple adapters or tools; the universal design simplifies connections, allowing quick switching between different fiber types and reducing equipment carry load for fieldwork.

Stable Performance & Durable Build

Crafted with high-performance aluminum alloy and an advanced APC circuit board, the device boasts excellent anti-oxidation and corrosion-resistant properties. Its high-efficiency power supply circuit ensures consistent power delivery, maintaining stable performance even in harsh environments. The robust construction guarantees long-term reliability, making it a trusted tool for continuous daily use.

Crash-Proof & ESD-Protected Structure

Engineered for durability, the tester features a stainless steel head and aluminum alloy body to resist impact and wear. The reinforced head design effectively prevents damage from accidental drops or collisions during field operations. Additionally, the case ground design provides reliable ESD (Electrostatic Discharge) protection, safeguarding internal components from static damage and ensuring stable functionality in electrostatically sensitive environments.

Compact Fiber Testing Essential

The 650nm Pen-Type Visual Fault Locator is a professional optical testing tool engineered for single-mode and multi-mode fiber networks. It integrates precise detection, practical functionality, and portability, becoming an indispensable helper for engineers, installers, and maintenance personnel in fiber-related work.

Core Functions

It excels at fiber tracing and routing in complex cabling environments, quickly identifying target fibers among numerous lines to avoid misoperation.

The tool provides reliable continuity checking, enabling instant verification of fiber link integrity and helping eliminate basic connection faults efficiently.

It accurately locates fiber flaws such as breaks, bends, or poor splices—with clear visible light indication that simplifies fault pinpointing even for non-professional operators.

Beyond fault detection, it serves as a practical aid for fiber preparation: assisting in precise cutting and thorough cleaning of fiber ends, laying a solid foundation for stable quick-connect installations.

Convenient Features

Ultra-portable form factor: The pen-shaped design is sleek and lightweight, allowing it to fit directly into pockets or tool belts for on-the-go use. It comes with a custom small pouch for safe storage and easy carrying.

Hassle-free on-site testing: No complicated setup is required—just connect and use, significantly reducing on-site operation time and improving work efficiency.

Intelligent battery management: Equipped with a low battery warning function, it reminds users to replace batteries in advance to avoid interruptions during critical tasks.

Remote detection capability: Supports long-distance fiber testing, covering common application scenarios such as building cabling, data center connections, and outdoor fiber links.

Dust-proof protection design: The optical fiber connector interface features dust-proofing, effectively preventing dust, moisture, or debris from entering—protecting the connector’s cleanliness and ensuring stable optical signal transmission for consistent testing accuracy.

Communication Engineering Construction: Used for fiber tracing and routing confirmation during computer room cabling and building vertical backbone fiber deployment to avoid cable confusion. Conducts continuity testing after construction to verify link connectivity.

Fiber Optic Network Maintenance: Supports maintenance of metropolitan area networks and access networks for operators such as China Telecom and China Unicom, quickly locating fiber faults like breaks, excessive bends, and poor splices. Performs daily inspections of fiber links in data centers to promptly identify potential hazards.

Security Surveillance Systems: Tests fiber links of security cameras in scenarios such as residential areas, shopping malls, and roads to ensure stable transmission of video signals. Assists security engineering companies in acceptance testing after fiber cabling.

Radio and Television Network Deployment: Traces and troubleshoots fiber transmission lines for cable TV and IPTV to guarantee uninterrupted program signal transmission. Confirms the correspondence between fiber ports and lines in radio and television computer rooms.

Industrial Control Scenarios: Detects fiber links in industrial Ethernet for factory automation and intelligent manufacturing, verifying the stability of fiber connections between industrial equipment and control systems. Maintains fiber cabling in complex environments such as mines and power plants.

Weak Current Engineering and Structured Cabling: Distinguishes fiber lines for different purposes in structured cabling projects of office buildings and parks, and assists in the preprocessing of fibers and quick connectors (aiding in precise cutting and thorough cleaning). Conducts random continuity inspections of fibers during project acceptance.

Educational and Scientific Research Institutions: Used in fiber optic experiment teaching in university communication laboratories and research institutions to demonstrate fiber transmission principles and fault detection methods. Validates and debugs links in small-scale fiber optic experimental platforms.

Home/Business Fiber Broadband Installation: Helps broadband installers confirm the continuity and routing of incoming fibers during on-site visits, assisting in the installation and commissioning of fiber quick connectors. Troubleshoots common disconnection faults in home and small business fiber broadband.