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.
Typical work: Break and bend location in distribution and drop fibers; Fiber identification and continuity checks; OTDR dead-zone companion testing.
Get a Quote WhatsApp UsNeutral stock in small lots, or private label made to your requirements. Prices on request — EXW factory pricing.
K-V20 key features
- 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
K-V20 specifications
| 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 |
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.
Where the K-V20 works
Break and bend location in distribution and drop fibers
Part of the Fiber Test Equipment range — see the specifications above for the figures that matter on this work.
Fiber identification and continuity checks
Part of the Fiber Test Equipment range — see the specifications above for the figures that matter on this work.
OTDR dead-zone companion testing
Part of the Fiber Test Equipment range — see the specifications above for the figures that matter on this work.
K-V20 components
- Visual fault locator K-V20 (power as ordered)
- Wrist strap (fitted)
Documents for this model
Product Catalog 2026 — this model appears in our full-range catalog (PDF), published in the Downloads center.
User manual — if you need the manual for this model now, ask via the inquiry form below or on WhatsApp and we will send the available documents with your quote.
More fiber test equipment
Questions about the K-V20
Can the K-V20 carry our own brand?
Private labeling is made to your requirements and confirmed per order — labels with your logo, part numbers and barcodes on the tools, the inner boxes and the outer cartons, ready for your warehouse. The products most often labeled are the K-35 cleaver, the KS-1 Kevlar shears and the K-870 stripper.
Can we order a small lot, unbranded?
Yes. Neutral stock is held for the core range: small lots are welcome, you can mix models in one shipment, and restock as you sell. Prices are on request — EXW factory pricing.
Ask for a quote — K-V20
Tell us the quantity, and whether you want it neutral or with your brand on it.