JILONG VFL-22M Mini Visual Fault Locator

The JILONG VFL-22M Mini Visual Fault Locator is a compact and portable fiber optic testing instrument designed for locating breaks, faults and signal leakage in optical fiber cables. Its strong 650nm visible red laser source provides reliable visual fault detection for fiber installation, maintenance and troubleshooting applications.

With a pocket-size design, integrated LED lighting and USB charging support, the VFL-22M is suitable for FTTH installation, fiber optic maintenance, ISP networks, telecom applications and field technicians who need a convenient fiber testing solution.

The VFL-22M is available in 10mW, 20mW and 30mW versions, offering detection distances of approximately 5–8km, 12–15km and 20–25km respectively, depending on fiber condition, connector quality, bending and other network factors.

Key Features

Compact and lightweight pocket-size design
650nm visible red laser source
Available in 10mW, 20mW and 30mW output versions
Detection distance up to 25km
Integrated VFL and LED lighting function
LED illumination for fiber checking in dark environments
Strong and stable visible light source
2.5mm universal interface
Supports SC, FC and ST fiber interfaces
1.25mm LC interface supported with an optional adapter
USB charging support
Silicone dust cap for improved dust protection
Automatic shutdown after 15 minutes of misoperation
Suitable for FTTH, ISP, telecom and fiber optic maintenance work

Technical Specifications

Specification	VFL-22M-10	VFL-22M-20	VFL-22M-30
Output Power	10mW	20mW	30mW
Detection Distance	0–10km	0–20km	0–30km
Operating Hours	12H	10H	4H
Wavelength	650nm	650nm	650nm
Laser Type	LD	LD	LD
Modulation Frequency	CW / 2Hz	CW / 2Hz	CW / 2Hz
Operating Temperature	-20°C to +60°C	-20°C to +60°C	-20°C to +60°C
LED	Supported	Supported	Supported
Power Supply	2 × AAA 1.5V Batteries	2 × AAA 1.5V Batteries	2 × AAA 1.5V Batteries
Dimensions	120 × 35 × 20mm	120 × 35 × 20mm	120 × 35 × 20mm
Weight	50g including batteries	50g including batteries	50g including batteries

Applications

The JILONG VFL-22M can be used for:

Fiber optic cable fault detection
FTTH installation and maintenance
ISP fiber network troubleshooting
Telecom fiber testing
Fiber optic link maintenance
Optical fiber continuity checking
Field fiber technicians and network installers

Connector Compatibility

The built-in 2.5mm universal interface supports SC, FC and ST optical fiber connectors. An optional adapter is required for 1.25mm LC interfaces.

Important Note

The actual detection distance can vary depending on fiber bending, connector condition, fiber quality and other network factors.

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JILONG VFL-22M Mini Visual Fault Locator