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Cable detector buying guide

Updated: 22 October 2026

You are about to buy a cable detector for a shelf, and the amazon.co.uk titles all sound like one tool. Some scan plasterboard for a live cable. One follows a tone on a dead garden wire. Neither is the locator you hire before you dig. This cable detector buying guide, from Peter F. on 22 October 2026, uses the twelve listings in our [cable detector comparison](/hub/measuring-equipment/cable-detector) as captured on 19 October 2026. It is not a laboratory test. A qualifying purchase through our links can earn a commission at no extra cost to you.

You are about to buy a cable detector for a shelf, and the amazon.co.uk titles all sound like one tool. Some scan plasterboard for a live cable. One follows a tone on a dead garden wire.

Our top picks

FOLAI FOLAI TH550

Best overall

FOLAI FOLAI TH550
6.3/10about £20.99
View offer
Mecurate Mecurate MSF60A

Rank 2

Mecurate Mecurate MSF60A
6.4/10about £25.99
View offer
VXSCAN VXSCAN F04

Alternative

VXSCAN VXSCAN F04
5.3/10about £42.74
View offer
On this page
  1. 1.Three different tools share this name
  2. 2.What a wall scanner can and cannot see
  3. 3.The wall decides the tool
  4. 4.How to read the listing
  5. 5.When to hire instead

Three different tools share this name

Eleven listings are wall scanners, from the Maxesla at £16.99 to the Bosch Truvo at £41.98. The VXSCAN F04 at £42.74 is the only tracer, and its listing forbids a live cable. A CAT and generator for excavation is not in this basket. The same shelf price does not turn the F04 into a wall scanner. A buried mower wire is the job on cable detector vs wire tracer.

What a wall scanner can and cannot see

An AC mode listens for an energised single-phase cable. The Truvo states live cables to 50 mm and metal to 70 mm, and it does not claim a wood-stud mode. Bosch’s en-GB manual, which is not the amazon bullet, adds 110–240 V at 50–60 Hz with voltage applied. Isolated, foil-shielded, and deep cables can be missed. The Health and Safety Executive says some detectors miss a low-current wire. NICEWIN, BEE&FLOWER, Ruwnii, and Aquota state no depth, and those four sit between three and seven reviews.
FOLAI FOLAI TH550

Testsieger

FOLAI FOLAI TH550
6.3/10about £20.99
View offer

The wall decides the tool

These £17–£27 scanners are written for ordinary plasterboard on timber studs. UK notes use them for shelves. Foil-backed plasterboard breaks the method. A Wenleer note says the board read as metal everywhere, while a cable in that wall still showed. Dot-and-dab, lath, and solid masonry are the other refusals. Depth figures are seller claims, not a British Standard.

How to read the listing

Read the live-cable line before the star. The TH550 prints 85–240 V to 2 inches at £20.99, from 8,014 reviews. The Maxesla prints a similar window at £16.99 from 9 reviews. HANMATEK’s 120 mm figure is iron in normal mode, and exact mode is 20 mm. The Mecurate’s box line agrees on a 9 V cell. The TH550 bullet says a new cell, and UK reviews say it was dead, missing, or that the unit would not turn on. The short decision is the best cable detector page.

When to hire instead

Hire when the hole is in the ground. HSG47 asks for plans, a trained locator, and trial holes, and LSBUD is the free enquiry to the asset owners. None of these twelve listings is that locator. A new circuit or work in a bath or shower zone is notifiable in England under Approved Document P. A picture hook is not. If you have nicked a cable, stop. Where a cable may sit is on cable detector before drilling.

Common questions

Is a stud finder the same as a cable detector?
On amazon.co.uk the names overlap. A stud finder in this set usually adds a live-AC mode and a metal mode, which is what the listings call a cable detector for walls. The Truvo is the exception that states live cable and metal and does not claim timber. A tracer such as the VXSCAN is not a stud finder at all. Read the live-cable sentence before the star line.
Will one tool do a living-room wall and a robot-mower wire?
No. A wall scanner looks for an energised field, or for studs and metal, in the plaster. A mower boundary wire is a dead loop in the turf. The VXSCAN listing forbids a connection to live cables and claims a single strand or a parallel pair, to about 2–3 feet and 1,000 feet along. Buy for the job you have this weekend.
What should I check on a live-cable claim?
Look for a depth and, if it is there, a voltage window. The TH550 states 85–240 V to 2 inches. The Truvo states 50 mm for live cables and 70 mm for metal. A line that only says live AC with no depth, which is how NICEWIN, BEE&FLOWER, Ruwnii, and Aquota are written, gives you nothing to compare. Metal mode is a separate claim. It does not prove the run of a cable.
Why do some listings quote inches and one quotes 120 mm?
Most of the £17–£27 scanners print stud steps around half an inch to one and a half inches, and an AC depth around 2 inches. Those are seller claims, not a British Standard. HANMATEK’s 120 mm line is iron in normal mode. The same listing limits exact mode to 20 mm and does not give the live-cable search that 120 mm figure.
Does a higher star rating with seven reviews beat 4.0 from thousands?
No. Aquota is 4.7 from 7 reviews, and the captured texts are all positive. HANMATEK is 4.0 from 8,439, the TH550 is 4.1 from 8,014, and the Mecurate is 3.9 from 6,493. The long files include false alarms, missed studs, and dead cells. A short file with no complaint has not yet shown those faults. Prefer the count that is large enough to contain the criticism.
When is the right buy a hired CAT and generator?
When you are breaking ground, not hanging a shelf. Plans, an enquiry through LSBUD, and a trained locator with a generator are the HSG47 route. A wall scanner cannot clear a dig, and the VXSCAN is a tone tracer for a dead single wire, not a service locator. This comparison did not test trade detectors outside the twelve listings.

Related pages

Non-contact voltage tester

Cable detector

Cable detector before drilling: zones are not clearance

Best cable detector: the top pick and who should skip

How to use a cable detector: calibrate, scan, mark

Cable detector vs wire tracer: wall scan or dead wire

Sources

Public UK sources from the research digest, last checked on 19 October 2026. Shelf prices and star lines are the amazon.co.uk figures captured with these twelve listings. The price bands are this set, not a market average.

  1. HSE: Work near electricity (retrieved 19 October 2026)
  2. HSE: HSG47 Avoiding danger from underground services (retrieved 19 October 2026)
  3. SELECT pocket guide: BS 7671 group 522.6 (retrieved 19 October 2026)
  4. Electrical Safety First: wiring regulations help (retrieved 19 October 2026)
  5. GOV.UK: Approved Document P (retrieved 19 October 2026)
  6. Bosch DIY GB: Truvo (retrieved 19 October 2026)
  7. LSBUD (retrieved 19 October 2026)
  8. amazon.co.uk listings for the twelve ASINs (retrieved 19 October 2026)