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 Power Meter FC/SC/ST universal interface Fiber Tester Built-in 1Mw Visual Fault Locator (OPM&VFL)

Product ID: 225257474

Details

Brand
D YEDEMC
Colour
Red
Item weight
140 Grams
Power source
Battery
Style
OPM&VFL

🌈8 wavelength measurements (850-1650nm)

📏Test range -70dBm to +6dBm

🔴Built-in 1mW red visual fault locator

¥12480

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Description

🔧 Test smarter, not harder — the ultimate fiber optic sidekick!

COMPACT PORTABLE - Lightweight 140g design fits perfectly in your toolkit or pocket
DUAL FUNCTIONALITY - Replaces two devices—optical power meter and red pen fault locator—in one sleek unit
SMART USER EXPERIENCE - Backlight, auto shutdown, wavelength memory & user calibration for effortless testing
UNIVERSAL COMPATIBILITY - Seamlessly supports FC/SC/ST & RJ45 interfaces for all your fiber needs
PRECISION POWER METERING - Accurate optical power readings with dual display in mW and dBm

The D YEDEMC Fiber Optic Cable Tester is a portable, battery-powered optical power meter and visual fault locator combo. It measures 8 standard wavelengths from 850nm to 1650nm with a test range of -70dBm to +6dBm, featuring a built-in 1mW red light source for fault detection. Compatible with FC, SC, ST, and RJ45 interfaces, it offers precision readings with dual mW/dBm display, user calibration, backlight, and auto shutdown. Lightweight and CE marked, it’s designed for professional fiber optic testing on the go.

Specifications

ASIN	B07XKH68B3
Best Sellers Rank	118,631 in DIY & Tools ( See Top 100 in DIY & Tools ) 75 in Network Testers
Brand	D YEDEMC
Colour	Red
Customer Reviews	4.6 4.6 out of 5 stars (1,116)
Item Weight	140 Grams
Manufacturer	Yide Machinery Co. Ltd.
Manufacturer Part Number	OPM
Measurement Type	Optical Power Meter
Model Number	OPM-VFL-1
Number of Items	1
Power Source	Battery Powered
Specification Met	IEC 61010-2-030, CE Marked, NIST Traceable
Style Name	OPM&VFL
UPC	782855705384
Upper Temperature Rating	60 Degrees Celsius

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¥12480

Duties & taxes included

In stock

Sold byAmazon JapanDelivered 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 Japan.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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