B3 Optical Fiber Visual Fault Locator with 650nm Red Light Source

• Customization: Available
• Type: Visual Fault Locator (Vfl)
• Certification: CE, RoHS, ISO
• Model NO.: B3
• Condition: New
• Feature: High Visibility, Portable, Long Battery Life, Dura
• Output Wavelength: 650nm
• Interface Type: 2.5mm Universal Adapter (Sc/FC/St)
• Operating Temperature: -20 ~ +60°c (Non-Condensing)
• Storage Temperature: -40 ~ +85°c
• Working Time: >24h (AA Batteries), >12h (Lithium Battery)
• Weight: 39~48g
• Transport Package: Standard Packaging (OEM)
• Specification: 125 × 36 × 17mm
• Trademark: HOLIGHT
• Origin: China
• HS Code: 9030409000
• Production Capacity: 100, 000 PCS/Month

Product Description

Product Description

Applications

Features

The B3 Optical Fiber Visual Fault Locator (Red Light Pen) is a compact, high-visibility testing tool used for detecting fiber faults such as breaks, bends, poor splices, or connector issues. It emits a bright red laser (650nm), allowing technicians to quickly trace and verify fiber continuity up to 20km depending on power level.

Available in multiple output levels (1mW to 30mW), the B3 VFL is an essential field tool for FTTH installation, data center maintenance, and fiber network troubleshooting.

• FTTH deployment and verification
• Fiber cable route tracing
• Fault localization in patch cords
• Optical module connector inspection
• ODF maintenance and repair
• Outdoor optical cable testing
• Network lab equipment
• Telecom/ISP service kit

• Visible 650nm red light source for quick fault detection
• Multiple power options: 1mW to 30mW
• Supports SC, FC, ST interfaces (optional LC adapter)
• Rugged aluminum shell for field durability
• Long battery life (up to 24 hours continuous use)
• Compact, pen-style design for easy carrying

Specification
Output Wavelength	650nm
Interface Type	2.5mm Universal Adapter (SC/FC/ST)
Operating Temperature	-20 ~ +60°C (Non-Condensing)
Storage Temperature	-40 ~ +85°C
Battery Type	2 × AA Batteries or Rechargeable Lithium Battery (Optional)
Working Time	>24h (AA Batteries), >12h (Lithium Battery)
Dimensions (mm)	125 × 36 × 17
Weight (g)	39~48

Customization 

Quality Assurance

• Private logo printing
• Custom power levels
• OEM packaging
• Multi-language user manuals

All units tested for light output, range, and connector fitment.
Certified under CE, RoHS, and ISO9001 standards.

Packing & Delivery

Buyer Benefits

Lead Time: 5–7 days depending on quantity
Packaging: Individual box + carton (shock-proof insert)
Shipping: DHL, FedEx, UPS, air, or sea freight

• No MOQ 
• Stable performance for harsh environments
• Suitable for telecom, ISP, and installer use
• Fast shipping, responsive support
• OEM & ODM supported with fast lead times

 Customer Reviews

• "This VFL works perfectly in the field — reliable light and rugged design." — Mohamed A., Egypt

• "Easy to use and compatible with our SC connectors out of the box." — Luis R., Mexico

• "Fast delivery and the quality exceeded our expectations. Thank you." — Tatiana V., Ukraine

• "Our technicians use this model daily. Good range and battery life." — Andrew P., Australia

• "Bright light and clear fault points even on long fibers." — Farid S., UAE

• "Compact, well built, and very affordable for bulk orders." — Carlos M., Argentina

FAQ

Q1: What types of connectors does this VFL support?
A1: It supports SC, ST, FC via built-in 2.5mm interface, and LC via optional adapter.

Q2: What power options are available?
A2: We offer 1mW, 5mW, 10mW, 20mW, and 30mW models to meet various distance requirements.

Q3: Is there a minimum order quantity?
A3: No MOQ for standard stock; OEM orders may require 100 pcs minimum.

Q4: Can I use this tool for both indoor and outdoor applications?
A4: Yes, its aluminum alloy shell and wide operating temperature range make it suitable for various environments.

Q5: What is the power source and battery life?
A5: It uses 2 × AA batteries (not included) and can operate up to 60 hours continuously.

Q6: Is OEM customization available?
A6: Yes, we offer logo printing, custom colors, and private packaging upon request.

Related Products

ABOUT HOLIGHT

Established in 2010, HOLIGHT has been dedicated to the fiber optic communication industry for over a decade. Our name "HOLIGHT" represents Honesty, Belief, and Righteousness — values that form the cornerstone of our management philosophy.

 

As a professional manufacturer of passive fiber optic products, we are focused on producing Optic Fiber Cables, Fiber Optic Connectors, Patch Cords, Adapters, Attenuators, Fiber Optic Splitters, MPO/MTP Series, FTTH Terminal Box, Splice Closure, Patch Panel, Splice Tray, OTDR, Fiber Cleaner Tool and so on.

 

Today, HOLIGHT exports products worldwide. As we move forward, we remain focused on delivering reliable quality, continuous innovation, and sincere service — all aimed at helping our partners succeed in every project.

Market Distribution

Global Market Presence, Diverse Client Base
Our products are trusted by clients across six continents, with a strong foothold in key regions:North America, South America, Eastern Europe, Western Europe, Northern Europe, Southern Europe, Africa, Mid East, Oceania. Meanwhile, we maintain a significant share in the domestic market, creating a balanced "local-to-global" sales network. 90% of our clients are international—proof of our product's adaptability and competitive edge.

 

Why Choose Us?
1. Global Standards: Compliant with international certifications, meeting diverse market demands.

2. Localized Support: Multilingual services and tailored solutions for seamless cross-border trade.

3. Reliable Supply Chain: Leveraging China's manufacturing strength for efficient production and on-time delivery.

→ Contact us today to explore partnership opportunities!

HOLIGHT Patch Cord Production Process /15 Steps

Every HOLIGHT fiber optic patch cord goes through a rigorous manufacturing process — from cable cutting, polishing, and assembly, to multiple rounds of inspection and testing.

This visual flowchart offers a glimpse into our quality-focused workflow, ensuring every connector meets the highest standards for insertion loss, return loss, and endface clarity.

Keyword Summary

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