what is the max distance this unit will test?

I am assuming you are talking about the laser. From my experience, it is only short distance such as a fiber enclosure. Or pig tail inside the node.

Is it supposed to come with an adapter for sc and st? mine came with no adapters. how to connect st to the meter?

I did not receive one either. I can not find one made for it. But it was pretty accurate compared to my old light meter with blue and green.

Is there a digital version of the user guide? My unit didn't come with instructions.

Not sure. The great part is it only does basically 3 things. play with the buttons for a couple minutes you know more than the manual. 1) cable fault locator (red laser/on off). 2) function key sets db reading (check light level). toggle to RG45 you can check for faults on ethernet. That’s it, good luck

What about lc interface ? i work with lc connections most

Lc is can't.It suit for SC/FC/ST.

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Fiber Optic Cable Tester Portable Optical Fiber Power Meter FC/SC/ST Universal Interface Integrated OPM, VFL, and RJ45 Functions (OPM-VFL-1)

Product ID: 156169245

Details

Brand
D YEDEMC
Color
Yellow
Item Weight
140 g
Power Source
Battery
Style
OPM&VFL

🌈8 wavelength support

📏Test range -70dBm to +6dBm

🔌Universal FC/SC/ST & RJ45

€ 63.62

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Description

⚡ Power up your fiber game with precision and portability!

USER CENTRIC DESIGN - Backlight, auto shutdown, wavelength memory, and user calibration for seamless field use.
PRECISION POWER RANGE - Accurately test optical power from -70dBm to +6dBm, ensuring flawless network diagnostics.
ALL IN ONE TESTING HUB - Integrated OPM, VFL, and RJ45 functions replace multiple tools—carry less, do more.
UNIVERSAL COMPATIBILITY - Supports FC, SC, ST connectors plus RJ45 testing—future-proof your fiber toolkit.
MULTI WAVELENGTH MASTERY - Measure 8 standard wavelengths from 850nm to 1650nm for ultimate fiber insight.

The D YEDEMC OPM-VFL-1 is a compact, battery-powered fiber optic cable tester combining Optical Power Meter, Visual Fault Locator, and RJ45 testing in one device. It supports 8 standard wavelengths (850-1650nm) with a test range of -70dBm to +6dBm, universal FC/SC/ST interfaces, and advanced features like backlight, auto shutdown, and user calibration. Lightweight at 140g, it’s designed for professional network diagnostics with high precision and ease of use.

Specifications

ASIN	B07XKH68B3
Best Sellers Rank	#7,672 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #9 in Network & Cable Testers
Brand	D YEDEMC
Brand Name	D YEDEMC
Color	Yellow
Customer Reviews	4.6 out of 5 stars 1,158 Reviews
Item Weight	140 g
Manufacturer	Yide Machinery Co. Ltd.
Measurement Type	Powermeter
Model	OPM-VFL-1
Number of Items	1
Part Number	OPM
Power Source	Battery Powered
Specification Met	Ul 61010-1, Iec 61010-2-030
Style	OPM&VFL
Style Name	OPM&VFL
UPC	782855705384
Upper Temperature Rating	60 °C

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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€ 63.62

Duties & taxes included

In stock

Sold byAmazon CroatiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Croatia.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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