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

NOYAFA NF-468S, 2,000 m (6562 ft) continuity reach, PoE claimed against its own warning review

A tester claiming a two-thousand-meter continuity reach and a 60 V PoE check, on a page whose first bullet warns that testing a live cable will seriously damage the equipment.

By Jean-Benoit Buisson

Read the first bullet and the fourth bullet together, because they cannot both be followed.

The first ends with a warning in parentheses: the NF-468S “cannot test network cables and telephone lines with power on, otherwise it will seriously burn the equipment”. The fourth states that the same unit “can test 60V power supply, quickly determine the power type and status of the POE switch”, supports 802.3af and 802.3at, and shows the result on LEDs. Power over Ethernet is, by definition, power on the cable. The function described in the fourth bullet requires exactly the condition the first bullet says will destroy the instrument, and nothing on the page resolves it.

This is not a small inconsistency. It sits on the most dangerous function the unit has, and a buyer following one bullet will do what the other forbids. Both are recorded here as published, and neither is chosen.

The second figure to read carefully is the reach. The third bullet gives a maximum test distance of 2,000 meters (6562 ft) for the host and remote arrangement. That is a continuity reach — how far apart the two halves can be and still see each other — and not a length measurement. The intro to this shelf separates the two deliberately: a continuity tester says the conductors arrive, a length-reporting tester says how far along a fault sits. Two thousand meters is ten times the range of the longest length measurement on this shelf, and it answers a different question entirely. Nothing on the page claims otherwise, and nothing on the page measures a distance.

What the unit does well is the crimp. The second bullet names a QC test giving continuity results — open circuit, crossover, straight through, short circuit — and states that it detects the crimping of the crystal head, which is the modular plug. Naming the plug as the thing being judged is unusual and useful: a badly seated plug is the commonest fault in a lead someone made themselves, and it is the one a pass-or-fail light hides.

The first bullet’s list of accepted leads is long and carries a typo: RJ45 with Cat 5, Cat 5e, Cat 6, Cat 6A and “CAT67”, which is not a category, plus RJ11, RJ12 and Cat 3 telephone wiring in 6P2C, 6P4C and 6P6C, shielded and unshielded. Naming the telephone pin counts individually is more precise than any published listing here manages.

Power is reported rather than specified: the fourth bullet says the unit prompts the battery level and warns of low voltage, and no cell type and no rechargeable pack is named anywhere. At $29.89 it is the third cheapest American tester here, and the two below it have no PoE claim of any kind.

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

Names the crimping of the modular plug as a thing the QC test judges, which is the commonest fault in a lead someone made
Lists the telephone formats individually — 6P2C, 6P4C and 6P6C — which no published listing on this shelf does
A host and remote reach of 2,000 meters (6562 ft), which is the longest continuity span published here
PoE to 802.3af and 802.3at with power type and status reported, for under thirty dollars

Compromises

The first bullet warns that testing a live cable will seriously damage the unit and the fourth describes a 60 V PoE test, which requires exactly that
"CAT67" in the first bullet is not a cable category
No cell type, no cell count and no rechargeable pack named, only a low-voltage prompt
The 2,000 meters (6562 ft) is a continuity reach and not a length measurement, which is the distinction this shelf turns on
No tone and probe, so the lead has to be found before it can be tested

Specifications

Tester type	A continuity tester in two pieces with an LED result display and a PoE check — the second and third bullets name a QC continuity test and a host and remote arrangement, and the fourth adds the PoE function. No screen and no distance measurement appears anywhere
Connector types accepted	RJ45, RJ11, RJ12 and Cat 3 telephone wiring — stated in the first bullet with Cat 5, Cat 5e, Cat 6, Cat 6A and "CAT67" named for RJ45, and 6P2C, 6P4C and 6P6C telephone formats named individually, shielded and unshielded. "CAT67" is not a category
Wire map detection	Yes — the second bullet names open circuit, crossover, straight through and short circuit as the QC test results, and states that the test detects the crimping of the modular plug, which is the commonest fault in a hand-made lead
Split pair detection	Not published on the listing — the four results named are open, crossover, straight through and short, and a pair that is continuous but wrongly twisted is none of them. No listing on this shelf publishes this row
Length reporting	Not published on the listing — the third bullet gives a maximum test distance of 2,000 meters (6562 ft), which is how far the remote can be from the host and still be seen. It is a continuity reach, not a measurement of where a fault sits, and no figure in meters for a fault position appears anywhere
Tone and probe function	Not published on the listing — no tone generator and no probe is named, so the unit tests a lead it is attached to and cannot find one among others
Remote units supplied	One — stated in the third bullet as a host and remote arrangement for detecting short circuits, open circuits and cross wiring on installed runs
PoE detection	Claimed, and contradicted by the same page — the fourth bullet states a 60 V supply test determining the power type and status of a PoE switch to 802.3af and 802.3at, while the first bullet warns that the unit cannot test cables with power on without serious damage. PoE is power on the cable. Both statements are recorded here and neither is chosen
Power source	Not published on the listing — the fourth bullet says the unit prompts the battery level and warns of low voltage, and no cell type, no cell count and no rechargeable pack is named anywhere
Amazon reference	B0D66W1SB7
EAN	0772093267645
On Amazon.com	Amazon.com had an offer at $30 on October 26, 2026.

The questions that come up before an order

Can it test a live PoE cable or not?

The page says both. The fourth bullet describes a 60 V PoE test to 802.3af and 802.3at. The first warns that the unit cannot test cables with power on without seriously damaging the equipment. PoE is power on the cable, and nothing on the page reconciles the two.

Does the 2,000 meters (6562 ft) mean it measures length?

No. It is the maximum distance between the host and the remote for a continuity test, stated in the third bullet. No measurement of where a fault sits appears anywhere on the page, which is a different instrument.

What powers it?

The page does not say. It mentions a battery prompt and a low-voltage warning, and names no cell type, cell count or rechargeable pack.

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-468S, 2,000 m (6562 ft) continuity reach, PoE claimed against its own warning	$30	A continuity tester in two pieces with an LED result display and a PoE check — the second and third bullets name a QC continuity test and a host and remote arrangement, and the fourth adds the PoE function. No screen and no distance measurement appears anywhere	RJ45, RJ11, RJ12 and Cat 3 telephone wiring — stated in the first bullet with Cat 5, Cat 5e, Cat 6, Cat 6A and "CAT67" named for RJ45, and 6P2C, 6P4C and 6P6C telephone formats named individually, shielded and unshielded. "CAT67" is not a category	Yes — the second bullet names open circuit, crossover, straight through and short circuit as the QC test results, and states that the test detects the crimping of the modular plug, which is the commonest fault in a hand-made lead	Not published on the listing — the four results named are open, crossover, straight through and short, and a pair that is continuous but wrongly twisted is none of them. No listing on this shelf publishes this row
KLEIN TOOLS VDV526-100, five named result states, remote stored in the body	$21	A continuity tester in two pieces with single-button operation — the first bullet gives one-button testing of terminated leads and the third names five LED result states. No screen and no distance measurement appears anywhere on the page	RJ11, RJ12 and RJ45 — stated in the first bullet for terminated voice and data leads, with Cat 3, Cat 5e and Cat 6/6A named in the second. Cat 3 is the telephone-era category and puts older house wiring in reach	Yes, with the possible answers published as a list — the third bullet names Pass, Miswire, Open-Fault, Short-Fault and Shield as the five states the LEDs indicate, which is the complete set of verdicts rather than a description of what is detected	Not published on the listing — the five result states are pass, miswire, open, short and shield, and a pair that is continuous but wrongly twisted is none of them. 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
iMBAPrice IMBA-NF468, scan or step mode, detachable remote	$10	A continuity tester with a visible LED display, in two pieces — the first bullet names automatic testing for continuity, open circuits, shorted and crossed pairs, and the description adds a detachable remote unit. No screen and no distance measurement appears anywhere	RJ45 and RJ11 — stated in the title and in the third bullet, with Cat 5, Cat 5e, Cat 6 and Cat 7 named in the fourth alongside RJ11 6P and RJ45 8P connectors	Yes — the first bullet names continuity, open circuits, shorted pairs and crossed pairs, shown on a visible LED display. The description adds a step mode checking one contact at a time, which is the finest form of this test on the shelf	Not published on the listing — the faults named are continuity, open, shorted and crossed pairs, and a pair that is continuous but wrongly twisted is none of them. No listing on this shelf publishes this row

What separates the models, in network and storage gear

If price decides: iMBAPrice IMBA-NF468, scan or step mode, detachable remote, at $10.

The buyer this one serves, among network and storage gear

Checking crimped leads and installed runs for continuity, by someone who will treat the PoE function as unresolved until the maker says which bullet holds.

What this one costs among network and storage gear

Details checked on October 7, 2026.

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