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)

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: 265929265

Details

Brand
D YEDEMC
Colour
lt orang l
Item weight
140 Grams
Power source
Battery
Style
OPM&VFL

🌈8 wavelength support

📏-70dBm to +6dBm range

🔌Universal FC/SC/ST interface

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VT18390

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Description

🚀 Elevate your fiber testing game — never miss a signal, never miss a beat!

SMART USER EXPERIENCE - Enjoy backlight, auto shutdown, wavelength memory, and user calibration for effortless operation.
UNIVERSAL COMPATIBILITY - Seamlessly test FC, SC, and ST connectors plus RJ45 for all your network setups.
ULTRA WIDE TESTING RANGE - Detect signals from -70dBm up to +6dBm ensuring pinpoint accuracy in any environment.
PRECISION ACROSS 8 WAVELENGTHS - Cover all your fiber optic needs with 850 to 1650nm range for unmatched versatility.
BUILT IN 1 M W VISUAL FAULT LOCATOR - Instantly identify fiber breaks and faults with a powerful red light source.

The D YEDEMC Portable Fiber Optic Cable Tester combines 8 standard wavelength measurements with a broad -70dBm to +6dBm testing range. Featuring universal FC/SC/ST interfaces and RJ45 support, it includes a built-in 1mW Visual Fault Locator for quick diagnostics. Designed for professionals, it offers backlight, auto shutdown, wavelength memory, and user calibration, all packed in a lightweight, durable device trusted by thousands since 2019.

Specifications

ASIN	B07XKH68B3
ASIN	B07XKH68B3
Best Sellers Rank	#58,117 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #278 in Multi Testers
Brand Name	D YEDEMC
Color	lt orang l
Customer Reviews	4.6 4.6 out of 5 stars (1,071)
Customer reviews	4.6 4.6 out of 5 stars (1,071)
Date First Available	23 September 2019
Item Weight	140 Grams
Item model number	OPM-VFL-1
Manufacturer	Yide Machinery Co. Ltd.
Manufacturer	Yide Machinery Co. Ltd.
Measurement Type	Optical Power Meter
Model	OPM-VFL-1
Package Dimensions	12.9 x 7.9 x 5.89 cm; 140 g
Part Number	OPM
Power Source	Battery Powered
Specification Met	IEC 61010-2-030, CE Marked, NIST Traceable
Style Name	OPM&VFL
UPC	782855705384
Unit Count	1 Count
Upper Temperature Rating	60 Degrees Celsius

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VT18390

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Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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