TEKCN TC-321 10mW Visual Fault Locator | Pen-Type VFL Fiber Optic Fault Finder

TEKCN TC-321 10mW Visual Fault Locator – Pen-Type VFL Fiber Optic Fault Finder

The TEKCN TC-321 10mW visual fault locator (VFL) is a powerful, compact pen-type fiber optic fault finder that quickly and visually identifies breaks, bends, bad splices, and faulty connectors in fiber optic cables. With a strong 10mW, 650nm red laser output, the TC-321 provides excellent visibility through fiber jackets and at connector interfaces — making it an indispensable tool for every FTTH installer and fiber optic technician.

Small enough to fit in your shirt pocket, powerful enough to trace faults up to 10km. The TC-321 is the VFL that professionals reach for first.

🔧 Key Features

• 10mW Output Power – Strong red laser for clear visual fault identification up to 10km
• 650nm Red Laser – Visible through fiber jacket and at connector end-faces for easy fault location
• Pen-Type Design – Ultra-compact and lightweight — fits in a shirt pocket or tool bag
• CW & Pulse Modes – Continuous wave mode for tracing; pulse mode for fault detection
• Universal 2.5mm Connector – Compatible with SC, FC, and ST fiber connectors
• Long Battery Life – Reliable power for extended field use on standard AA/AAA batteries

📋 Technical Specifications

🏗️ Applications

• Fiber optic break and bend detection
• Bad splice and connector fault identification
• FTTH / FTTB fiber drop cable testing and verification
• Fiber optic network maintenance and troubleshooting
• Fiber continuity verification before and after splicing
• Connector end-face inspection and cleaning verification

📦 Package Contents

• 1× TEKCN TC-321 10mW Visual Fault Locator
• 1× 2.5mm Universal Adapter
• 1× Battery
• 1× Carrying Pouch

❓ Frequently Asked Questions

Q: What is the difference between the 5mW and 10mW VFL?
A: The 10mW TC-321 has a stronger laser output, allowing it to detect faults at greater distances (up to 10km vs. ~5km for the 5mW version) and produce a brighter visible light through the fiber jacket. For most FTTH drop cable work, either version works well; for longer runs or more demanding applications, the 10mW is recommended.

Q: Is the TC-321 compatible with LC connectors?
A: The TC-321 uses a 2.5mm universal interface, which is compatible with SC, FC, and ST connectors. For LC connectors (1.25mm), you will need a 1.25mm adapter (available separately).

Q: Can I use the VFL to check if a fiber is live (carrying signal)?
A: No. A VFL emits a visible red laser and is used for fault detection only. To check if a fiber is carrying live optical signal, use a fiber identifier or optical power meter.

Q: Is the laser safe to look at?
A: Never look directly into the fiber end or connector while the VFL is active. The laser output can cause eye injury. Always follow standard fiber optic safety precautions.

Order the TEKCN TC-321 10mW VFL today and get worldwide shipping, competitive pricing, and expert support from our fiber optic specialists.