Network Cable Tester for LAN RJ45 RJ11 Cable RJ45 Ethernet Cable Tester
Original price was: £54.99.£9.99Current price is: £9.99.






Price: £54.99 - £9.99
(as of Jul 10, 2025 20:20:40 UTC – Details)
From the brand


About us:
PETECHTOOL is committed to creating a more convenient lifestyle for everyone.
Since the development, we have made products with heart, so that every product has high quality, and has won the trust of many customers.
Whether you’re a professional electrician or a do-it-yourself hobbyist, you can use our products to make your own Ethernet cables.
RJ45 Connectors
RJ45 Crimper and Tools
How we get our start?
We started many years ago with a goal: to simplify professional tools so that ordinary people can also deal with cable problems in life.
Are our products high quality?
Our products are designed by a professional team and produced by sophisticated instruments. After production, they has been inspected many times, and the quality are absolutely reliable.
What makes our products unique?
Our professional team responds to market trends and innovates products that serve the public based on existing experience.

The LAN cable tester can test both of the RJ11 telephone cable and RJ45 network cables such as RJ45 Cat5 Cat6 Cat7. Built-in high performance chip, which provide faster test results when checking wires and data points.
The network provides the verification detail of wires to ensure that your networking is flowing optimally. And it will inform you whether the cables are paired and connected correctly or not.
The network cable tester features a nice LED display which indicates. And the results that are easy for anyone to understand. It can be used by both professionals and unskilled home-users.
Note: The cable tester needs a 9-volt battery to function. The battery is not included in the package at the time of purchase.
If you are not satisfied with this Ethernet cable tester, please feel free to contact us. We will solve all your problems well.
Customers say
Customers find the cable tester works well, is simple to use, and offers good value for money. Moreover, they appreciate its time-saving capabilities, with one customer noting it’s perfect for quick checks. However, the build quality receives negative feedback, with multiple customers reporting it broke on first use and describing it as not heavy duty.
13 reviews for Network Cable Tester for LAN RJ45 RJ11 Cable RJ45 Ethernet Cable Tester
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Original price was: £54.99.£9.99Current price is: £9.99.
Tony –
Excellent product
Excellent product
Paul C –
Good value
Great low cost product to help with ethernet cabling that was preinstalled in a new house but not labeled or terminated. Worked well for me
Rod Green –
Itâs an ok network tester
This unit is not heavy duty. Ok for the occasional cable test, but possibly wouldnât stand excessive use. Did what I wanted & checked my self made cables successfully. If itâs one you need to use constantly, I would advise a better built upmarket brand.
Sam Morris –
Does what it says on the tin.
This is a very useful tool for anyone running network cable or testing ports. I was able to identify issues with a RJ45 port in my apartment rental.It’s also a useful tool for live/broadcast sound engineers, who may be running network cable, a quick and accurate way to identify faults, without having to bring the two ends of the cable together – a great time saver.
John R –
There are 2 standards for Cat 5/6 cables: T568A & TR568B
This device is great value for money and works well.If you make a mistake and terminate a T568A line with a TR568B wired connector (or vice-versa) – it’s easy to see lights 3&5 in the wrong sequence. It also detects bad terminations and broken cables.
Simon Barnett –
It works well. Simple to use.
It works well. Simple to use.
M. Jones –
Cheap and cheerful but performs fine
It is not a thing of beauty and is obviously cheaply made but if you have been thrashing around trying to use guesswork or a multimeter to get your Ethernet wiring working, this is well worth the money.
Paul Mitchell –
Delivered on time
Delivered on time very good
Rodrigo –
Es una gran ayuda para comprobar si llega la señal
Sarandi –
My five-star rating is entirely based on the price and basic functionality. For less than $10 you are getting a continuity tester that sequentially shows which conductor matches the one being tested. Every other negative thing I write in here is solely for making others aware, or as ways to improve for the manufacturer.If your cable wires are set up 1:1 and it is miswired, the lights won’t match. Sequencing through each pair happens quickly, but with enough time to see a mismatch and where.I think it does a few other things but I need to review the instructions more carefully as the small instruction set was clearly not written by a native speaker. The switch settings should be a bit more obvious on the housing. It should at least be printed with a few more words.That said, I deciphered enough to share that this isn’t meant to be used while plugged into devices that are powered on. Another instance of wishing this was printed on the housing.It has both RJ45 and RJ11, so make sure you’re plugging into the right place. As others have stated, these connectors are fiddly at best. If your cables have the retaining clip on the boot, they might be even more problematic.The housing material seems a bit thin, but the mold it seems decently executed, no rough bits or weird flashing.I like that the dovetail shoe helps keep this in one piece but also allows for split usage. That way you can at least leave the cable ends in place.What may also not be intuitive is if you have a known-working tester jumper, you can test two ends of in-wall wire after it’s been installed. Of course, it should be tested first, but if it hasn’t been this will at least save a lot of time.Overall, this thing is accurate and for 10 bucks, is durable enough to keep in my data wiring kit without worrying about it breaking.
Amazon Customer –
OttimoHo risolto il mio problema
yannick –
Bon produit. Idéal pour retrouver et vérifier les câbles ethernet et téléphone.
KurtWilli –
Sehr gut zu gebrauchen, zur schnellen Ãberprüfung von Netzwerkkabeln.