Visual Fault Locator K-V20

A flat handheld red-light locator with real range: 650 nm at up to 50 mW, a built-in work light and a 2.5 mm universal port — the OTDR's pocket companion.

650 nm red light at 10, 20, 30 or 50 mW as ordered
2.5 mm universal adapter for FC / SC / ST ferrules
Built-in LED work light on its own button
Constant-current drive for a stable, even glow
Two AAA batteries or a rechargeable lithium version (USB-C charging)
Flat ergonomic body, 145 × 31 × 22 mm, 100 g
VFL and power indicator LEDs

Ask for Pricing WhatsApp K-V20 Datasheet (PDF)

Checked before it ships

Functions verified against the ordered version before dispatch — the version table on this page is the exact build list.

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Your brand on it

Neutral instrument branding as standard; labeling per order.

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Stock & small lots

Instruments are supplied to the version you order; tell us the work and we will help you spec it.

Specifications

K-V20 full specification

Wavelength	650 nm
Output power	10 / 20 / 30 / 50 mW as ordered
Connector	2.5 mm universal adapter
Fiber type	Single-mode and multimode
Power supply	2 × AAA batteries or lithium battery (USB-C charging)
Dimensions	145 × 31 × 22 mm
Weight	100 g

Visual fault locator K-V20 (power as ordered)Wrist strap (fitted)

In the box: the parts above, packed per unit. Applications: Break and bend location in distribution and drop fibers · Fiber identification and continuity checks · OTDR dead-zone companion testing.

Choosing VFL Power

Red light leaks where fiber is broken, badly bent or poorly spliced. 10 mW covers in-home and in-building runs; 20–30 mW is the field standard for distribution spans; 50 mW earns its keep on long, dark runs and through multiple closures.

The K-V20 shines into single-mode and multimode fiber through the universal 2.5 mm port — add a 1.25 mm adapter (K-AD25-125 in the adapter range) for LC ports.

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