Continuity, wire map and length are three different instruments in one word · review

NOYAFA NF-8518, seven optical wavelengths, 350 m (1148 ft) length, color display review

The longest length range on this shelf at 350 meters (1148 ft), the only color display, and the only optical power meter here that publishes the seven wavelengths it reads.

By Jean-Benoit Buisson

Nine functions, named individually in the first bullet: a digital continuity and scan test, cable length tracking, a PoE check, port flash, a visual fault locator, a QC test, an optical power meter, non-contact voltage detection and automatic shutdown. Two listings on this shelf carry an optical power meter. Only this one says what it will read.

The second bullet publishes seven wavelengths — 850, 1300, 1310, 1490, 1550, 1625 and 1650 nanometers — with a power range of −70 to +10 dBm and FC, SC and ST connectors. The published NOYAFA instrument on this shelf names an optical power meter and stops there. The difference matters because a meter that reads 1310 and 1550 covers single-mode telecoms work and one that also reads 850 covers multimode in a building; a buyer with a specific fiber needs the list, not the name of the function.

The visual fault locator in the fourth bullet emits at 650 nanometers with fast and slow flashing modes, for finding a break, a poor connection, a bend or a crack by eye, or for picking the right fiber to splice. That is the cheap half of fiber diagnosis and it is published with its wavelength, which the power meter list makes checkable.

On the copper side the third bullet gives a length range of 350 meters (1148 ft) — the longest on this shelf, against 200 meters (656 ft) on the two NOYAFA units that publish one — and extends it to telephone and BNC leads as well as network ones. PoE testing checks the mapping polarity and the voltage of a PoE switch and withstands 60 V DC, with automatic switching between 10M, 100M and 1000M. The fourth bullet adds digital-mode wire tracing described as working in complex patch panel environments, and names wire-map connectivity, short circuits, open circuits and miswires for UTP and STP leads.

The fifth and sixth bullets cover the practical half. A 1500 mAh lithium pack at 3.7 V with up to 10 hours of working time and Type-C charging; a settable backlight timeout and automatic shutdown; non-contact voltage testing for household wiring; a color display, which the sixth bullet contrasts in as many words with “low-end monochromatic screens”; and an LED flashlight for dark racks and loft spaces. The kit is listed: color transmitter, tracking receiver probe, RJ45 adapter jumper, RJ11 adapter jumper, Type-C cable, zippered case and manual.

Two things are missing and both are worth naming. There is no remote terminator in that list — the tracking receiver is a probe, not a remote — so a one-to-one continuity test on an installed run has nothing to close the far end with unless the RJ45 jumper is being used that way, and the page does not say. And split pairs go unaddressed, as on every one of the fifteen listings on this shelf, on the most capable instrument here.

At $135.99 and 700 g (24.7 oz) this is the most expensive American tester on this shelf by a factor of two and a half over the next.

Prices quoted in this text were read on October 7, 2026. The live price is at the top of the page.

Where it holds up, and where it stops

Strengths

Publishes the seven wavelengths its optical power meter reads — 850 to 1650 nm — where the other optical instrument on this shelf names the function and no wavelengths
The longest length range here at 350 meters (1148 ft), extended to telephone and BNC leads as well as network ones
A visual fault locator published with its wavelength, 650 nm, and two flashing modes
The only color display on this shelf, with an LED flashlight and a 10-hour stated working time on a Type-C rechargeable pack
The kit is listed item by item, including both adapter jumpers and a zippered case

Compromises

No remote terminator in the kit, so closing the far end of an installed run is not provided for and the page does not explain how it is done
The most expensive American tester on this shelf at $135.99, two and a half times the next
Split pairs are unaddressed on the most capable instrument here
No tone frequency published for the digital tracing function
Nine functions in one hand means nine things to learn before any of them is quick

Specifications

Tester type	A multifunction tester with a color display and a tracking receiver probe — the first bullet names nine functions: digital continuity and scan, cable length tracking, PoE check, port flash, visual fault locator, QC test, optical power meter, non-contact voltage and automatic shutdown
Connector types accepted	RJ45, RJ11 and BNC — the third bullet names network, telephone and BNC leads for the length function, and the kit in the sixth includes an RJ45 adapter jumper and an RJ11 adapter jumper. The optical side takes FC, SC and ST fiber connectors per the second bullet
Wire map detection	Yes — the fourth bullet names wire-map connectivity, short circuits, open circuits and miswires for both UTP and shielded STP leads, read through the digital tracing probe
Split pair detection	Not published on the listing — the faults named are short circuits, open circuits and miswires, and a pair that is continuous but wrongly twisted is none of them. No listing on this shelf publishes this row, including this one, the most capable here
Length reporting	Yes, up to 350 meters (1148 ft) — stated in the third bullet, which extends the function to telephone and BNC leads as well as network ones. It is the longest length range on this shelf. Reporting a distance is not the same as certifying a run against the performance limits of a category, which is a different instrument and is not claimed here
Tone and probe function	Yes, digital — the fourth bullet describes a wire-tracing probe using a digital signal mode for precise tracing in complex patch panel environments, and the kit includes a tracking receiver probe. No tone frequency is published
Remote units supplied	Not published on the listing — the kit named in the sixth bullet holds a color transmitter, a tracking receiver probe, an RJ45 adapter jumper, an RJ11 adapter jumper, a Type-C cable, a zippered case and a manual. A tracking probe is not a remote terminator, and no remote is named
PoE detection	Yes — the third bullet states that the PoE test checks cable mapping polarity and the voltage of PoE switches and withstands 60 V DC, with automatic detection and switching between 10M, 100M and 1000M modes
Power source	A built-in 1500 mAh lithium pack at 3.7 V charged over Type-C, with up to 10 hours of stated working time — in the fifth bullet, alongside a settable backlight timeout and automatic shutdown time
Amazon reference	B0GYF7V3X5
EAN	0762744788131
On Amazon.com	Amazon.com had an offer at $136 on October 26, 2026.

The questions that come up before an order

Which wavelengths will the power meter read?

Seven, named in the second bullet: 850, 1300, 1310, 1490, 1550, 1625 and 1650 nm, over a range of −70 to +10 dBm, with FC, SC and ST connectors. The other optical instrument on this shelf names the function and no wavelengths.

How far will it measure?

Up to 350 meters (1148 ft), per the third bullet, on network, telephone and BNC leads. That is the longest range on this shelf; the two other NOYAFA units here reach 200 meters (656 ft).

Is a remote unit included?

No. The kit holds a color transmitter, a tracking receiver probe, two adapter jumpers, a Type-C cable, a case and a manual. A tracking probe is not a remote terminator, and the page names no remote.

How long does the battery hold out?

Up to ten hours, stated in the fifth bullet, from a built-in 1500 mAh lithium pack at 3.7 V charged over USB Type-C.

Against the rest of the network and storage gear

This network and storage gear share the category and the price bracket. Only what each one states is shown; an incomplete column would mislead.

Model	Price	Tester type	Connector types accepted	Wire map detection	Split pair detection
NOYAFA NF-8518, seven optical wavelengths, 350 m (1148 ft) length, color display	$136	A multifunction tester with a color display and a tracking receiver probe — the first bullet names nine functions: digital continuity and scan, cable length tracking, PoE check, port flash, visual fault locator, QC test, optical power meter, non-contact voltage and automatic shutdown	RJ45, RJ11 and BNC — the third bullet names network, telephone and BNC leads for the length function, and the kit in the sixth includes an RJ45 adapter jumper and an RJ11 adapter jumper. The optical side takes FC, SC and ST fiber connectors per the second bullet	Yes — the fourth bullet names wire-map connectivity, short circuits, open circuits and miswires for both UTP and shielded STP leads, read through the digital tracing probe	Not published on the listing — the faults named are short circuits, open circuits and miswires, and a pair that is continuous but wrongly twisted is none of them. No listing on this shelf publishes this row, including this one, the most capable here
NOYAFA NF-8209, length per twisted pair in three units, live tracing to 600 m (1969 ft)	$55	A multifunction tester and tracer in three pieces — transmitter, receiver and remote adapter, stated in the fifth bullet, with continuity testing, length measurement, PoE testing, port flash, link test, live tracing and a non-contact voltage pen named across the five bullets	RJ45, shielded and unshielded, with 8-pin network and 9-pin shielded leads both named in the second bullet. Cat 5 and Cat 6 are named for the length function in the third, and the title adds telephone line finding	Yes — the second bullet names short circuits, open circuits, miswiring and a normal connection as the one-to-one continuity results, with the remote adapter at the far end. The 9-pin case puts the drain of a screened lead inside the test	Not published on the listing — the faults named are short circuit, open circuit and miswiring, and a pair that is continuous but wrongly twisted is none of them. No listing on this shelf publishes this row
KLEIN TOOLS VDV500-705, analog toner, adjustable volume and headphone jack	$50	An analog tone generator and wire-tracing probe — stated in the first bullet for open-ended, non-active low-voltage wires under 60 V. The wire map is performed by the toner and probe together rather than by either alone, stated in the fifth bullet	RJ45, RJ11 and RJ12 are named in the title, with an RJ45 to RJ45 test cable supplied per the fourth bullet, and alligator clips in the third for unterminated wire. The title also names Ethernet, telephone, speaker, coaxial, video and data cables	Yes, but only with both halves in use — the fifth bullet states that the toner and the probe together perform a pin-to-pin wire map test. No per-conductor indicator count and no list of fault names is published	Not published on the listing — the wire map is described as pin-to-pin and no fault is named individually, so a pair that is continuous but wrongly twisted is not addressed. No listing on this shelf publishes this row
INTELLINET NETWORK SOLUTIONS 780094, five-in-one tester covering network, telephone, USB, FireWire and coaxial leads	$40	A continuity tester with indicator lights — the third bullet gives a connection test with lights for eight individual conductors and for the shield, and the fourth names the three faults it checks for. There is no screen and no distance measurement anywhere on the page	Six kinds are named in the title: RJ45, 10Base, RJ11, USB, FireWire and BNC, while the badge on the same title says five in one. The first bullet gives Cat 5 and Cat 6 network and ISDN connections, the second gives USB A and B and six-pin IEEE 1394 FireWire, and the contents list adds a coaxial adapter. The count in the badge and the count in the brackets are both printed here as published	Yes — the third bullet gives a light for each of the eight conductors and one for the shield, and the fourth names wrong pin assignment among the faults	Not published on the listing — the three faults named are a short circuit, a wrong pin assignment and no connection, and a pair that is continuous but wrongly twisted is none of them

What separates the models, in network and storage gear

If price decides: INTELLINET NETWORK SOLUTIONS 780094, five-in-one tester covering network, telephone, USB, FireWire and coaxial leads, at $40.

The buyer this one serves, among network and storage gear

A technician working copper and fiber with one instrument, who needs the wavelength list checked against the links in front of them.

What this one costs among network and storage gear

Details checked on October 7, 2026.

What buyers actually choose

Amazon reports what buyers took in the month before this page was last checked: at least 100.

The figure is a floor, rounded by Amazon, and read through Keepa — it says what buyers picked, not what a maker claims.

Sources

Specifications: the manufacturer sheet for network and storage gear and the matching Amazon product page. Prices and availability: Keepa. Every figure on this page names its source.

What we look at on this network and storage gear