Rechargeable Pen-type Red Light Fault Locator (VFL + IVFL + OTDR Waveform)

Professional Fiber Optic Testing Tool for Network Technicians

Designed for telecom engineers, data center technicians, and fiber optic installers, this pen-type fault locator combines a visual fault locator (VFL), an infrared fault locator (IVFL), and OTDR waveform display in one compact device. Whether you are troubleshooting a local area network or inspecting a long-haul fiber link, this tool provides the accuracy and portability you need.

1. True 20KM Detection Range – Equipped with a high-power 10mW red light source and a 1550±10nm IVFL port. This pen-type optical fault locator detects breaks, bends, and poor splices across up to 20KM of fiber, making it suitable for both short-range and long-distance network diagnostics.

2. Dual VFL & IVFL Ports – Features an IVFL infrared light port for detecting hidden fiber faults and a VFL red light port (650±20nm, CW/3Hz Flash) for visual inspection. The universal 2.5mm interface ensures compatibility with standard SC/PC connectors.

3. Bluetooth Remote Control & Real-Time Detection – Connects via Bluetooth to the WeChat Mini Program "SKL Saixian Cloud Control". This enables real-time waveform monitoring and remote operation on your smartphone, allowing you to view dynamic link changes without being tethered to the device.

4. 2.0-Inch Color Screen & 5-Way Joystick – The compact color screen displays rich waveform details, letting you view fiber traces at a glance. A 5-way joystick and dedicated buttons (Zoom, Menu, Light, Back) make it easy to navigate settings, scale waveforms, and jump to event markers.

5. Rechargeable & Built-In LED Light – Powered by a built-in 800mAh lithium battery with Type-C fast charging, offering over 4 hours of VFL use or over 6 hours of IVFL use. An integrated LED flashlight provides illumination for cable tracing in dark environments.

Key Features at a Glance:

• 📡 20KM Measurement Range: The 10mW red light source penetrates long fiber runs, making it ideal for both short-distance (<5km) continuity checks and long-distance (>5km) fault diagnosis.
• 💡 Dual VFL & IVFL Ports: Use the VFL red light (650±20nm) for visible break/bend detection, and the IVFL infrared light (1550±10nm) for locating hidden faults. Supports live fiber testing at 1270/1310/1577nm (≤7dBm) and 1490nm (≤0dBm).
• 📱 Bluetooth Remote Control: Pair with your smartphone via the WeChat Mini Program for real-time line detection. View waveform changes and control the device remotely from a distance.
• 🖥️ 2.0-Inch Color Screen & Joystick: The screen displays fiber waveforms clearly, showing event markers and distance readings. The 5-way joystick and dedicated buttons allow for intuitive navigation through menus, range settings (100m to 20km), and pulse width adjustments.
• 🔋 Type-C Rechargeable & Portable: Built-in 800mAh lithium battery provides over 4 hours of VFL operation. The pen-style design with a belt clip ring makes it easy to hang on a work belt or pocket.

Who Is This Tool For?

This fiber optic fault locator is a standard diagnostic tool used across multiple industries:

• Telecommunications: Telecom operators, ISP field engineers, and FTTH installers for last-mile fiber troubleshooting.
• Data Centers: IT technicians performing routine maintenance and fault location on high-density fiber patch panels.
• Utility & Enterprise: Network administrators in enterprise campuses, utility companies, and research facilities.
• Aerospace & Military: Field maintenance of fiber optic communication systems.

Technical Specifications:

Product Name	Pen-style Fiber Optic Fault Locator
VFL Wavelength	650±20nm
VFL Output Power	10mW
VFL Red Light Mode	CW, 3Hz Flash
VFL Interface	Universal 2.5mm
IVFL Measurement Distance	20KM
IVFL Test Wavelength	1550±10nm
Live Fiber Test	1270/1310/1577≤7dBm, 1490≤0dBm
IVFL Interface	SC/PC
Screen Size	2.0-inch Color Screen
Charging Port	Type-C
Battery	Built-in 800mAh Lithium Battery
Operating Time	VFL Only >4 Hours, IVFL Only >6 Hours
Operating Temperature	0~50°C
Dimensions	185 x 49 x 25 mm
Weight	119g (Device Only)

Package Contents:

• 1 x Pen-style Optical Fault Locator
• 1 x USB Data Cable (Type-C)
• 1 x Certificate of Conformity
• 1 x User Manual
• 1 x Packaging Box

Our Service Commitment: