The best voltage tester screwdrivers, compared.
Top pick: Bosch SL3x65 phase tester – Highest score, 84. The listing names DIN VDE 0680-6 and AC 120–250 V, with 4.6 from 793 reviews and no battery. It is not a two-pole dead test. Best value: Rolson 28110 2-piece pair – About £4.23 for two slotted lengths at 100–250 V, rated 4.4 from 1,913 reviews. A dim neon and chipped tips stay in the reviews. Updated October 2026.
A voltage tester screwdriver on amazon.co.uk is usually a single-pole neon phase tester: a slotted driver with a neon, used to see if a terminal looks live. A glow means you treat the point as live. No glow means the lamp did not strike, not that the conductor is dead. Buyers are householders and tradespeople who want a pocket check, not a dead test. That is a phase-tester claim, not an HSE approval. Reviews include a dim neon and chipped tips. The [voltage tester screwdriver buying guide](/hub/hand-tools/voltage-tester-screwdriver/sub/voltage-tester-screwdriver-buying-guide) sets range, tip and standard before you use this ranking. You rest a finger on the cap and put the tip on a conductor. Safe isolation uses a two-pole indicator to BS EN 61243-3, proved before and after. NICEIC’s steps use that indicator and a proving unit.
A voltage tester screwdriver on amazon.co.uk is usually a single-pole neon phase tester: a slotted driver with a neon, used to see if a terminal looks live. A glow means you treat the point as live.
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Personal buying guide
Question 1 of 2
What do you want in the packet?
The Bosch SL3x65 is one slotted glow-lamp phase tester at £5.99, with AC 120–250 V and DIN VDE 0680-6 named on the listing. The first 50 reviews, inside a 4.6 rating from 793, mostly say it is simple and needs no battery. They do not repeat a dead lamp or a snapped tip. The measurement-type line still says voltmeter. The standard named is a single-pole phase-tester claim, not a two-pole proving-dead test.
Pros
Cons
Best for: A single mains phase tester with a named DIN VDE 0680-6 line and no battery
Less suitable: A second blade length in the same pack, or a 12 V vehicle check
Specifications
Common questions
What voltage does the Bosch SL3x65 claim?
The listing says AC 120 V to 250 V, with an integrated glow lamp. It does not claim a 12 V range.
Does it need a battery?
The power-source line says hand powered. Reviews praise the lack of a battery. Nothing in the included-components line is a cell.
Which standard is named?
The bullets say certified according to DIN VDE 0680-6. The listing does not mention GS38 or a CAT rating.
The PaulStore pair is £3.99, rank 3 in Voltage Testers on the listing, with 4.6 from 315 reviews. The bullets describe two slotted lengths and 100–250 V. The title says 100–500 V and VDE rated. In the first 50 reviews people use both sizes on lights and fuses, and others report no light, a dead small tester, or a bent tip.
Pros
Cons
Best for: A cheap two-length neon pair if you quote the bullet range, not the title range
Less suitable: Anyone who needs the title and the bullets to state the same voltage
Specifications
Common questions
Which voltage figure should you read?
The title says 100–500 V AC. The bullets say 100 V to 250 V. Those are different claims. The listing does not resolve them.
What is in the pack?
The bullets list a 3 x 140 mm and a 3.5 x 190 mm slotted tester. The included-components field says Handle, and number of items says 1.
Does the listing name a standard number?
The title says VDE rated. The bullets say TÜV and GS approval. No standard number, such as DIN VDE 0680-6, is printed on the listing.
The ebuyerfix pair is two flat-head pens at £3.89, and 100–250 V is the same figure in the title and the bullets. Reviews, 4.5 from 170, praise the price and the two lengths. Several say the blade is soft, a head snapped on a UK plug, or the ends broke on first use. One review says a unit did not work. No DIN, VDE or IEC number is on the listing.
Pros
Cons
Best for: A low-price slotted pair when the voltage lines on the listing match
Less suitable: Driving screws hard, or a buyer who wants a standard number on the page
Specifications
Common questions
Do the title and the bullets agree on voltage?
Yes. Both say 100 V to 250 V. The minimum and maximum operating-voltage fields match.
How many testers are in the pack?
The title, unit count and number of packs say 2. The number-of-items field says 1.
Is a standard named?
No standard number appears on the listing. The bullets claim an insulated blade sheath.
The Rolson 28110 is two slotted neons at £4.23, 100–250 V in the bullets, with IEC 1010 on the specification line. The first 50 reviews, inside 4.4 from 1,913, often call both lengths good value and say there is no battery. The same sample includes a dim neon, a tip that chipped or folded, and one pair that did not work on arrival. The power-source field does not match the reviews.
Pros
Cons
Best for: A cheap two-length slotted pair with a large UK review count and a 100–250 V range
Less suitable: A driver you will lean on, or a check in bright daylight where a dim neon is hard to see
Specifications
Common questions
What sizes are in the Rolson pair?
The bullets list 190 x 3.5 mm and 140 x 3 mm, both with a plain slot blade and a transparent handle.
Does it use a battery?
The power-source field says corded electric. Reviews say it has no battery and is not corded. The bulbs are the neon type.
What standard is printed?
The specification line says IEC 1010. The included-components line says two-piece GS tester. GS38 is not on the listing.
The Eightwood pen is £6.99 with 4.3 from 1,584 reviews. The bullets state 220 V, a 75 mm length and a 4 mm tip, plus CE and RoHS. Across the first 50 reviews the neon is repeatedly called dim, including indoors, and some units did not work or were returned. A wide blade is a separate complaint. Number of items says 10 against a one-pen bullet.
Pros
Cons
Best for: A single pen only if you accept a 220 V figure and a neon that reviews call dim
Less suitable: A 230 V range you can read as 100–250 V, or a spare second length
Specifications
Common questions
Is 220 V a range?
The bullets and both voltage fields say 220 V, not 100–250 V. UK mains are nominally 230 V. The listing does not add a tolerance.
How long is the blade?
The bullets say overall length 75 mm and tip diameter 4 mm. One review says that blade is too wide for small terminal screws.
How many are in the box?
The bullets say one tester pen. Number of items says 10. Included components says no.
The KAIWEETS pen is £16.98, 4.3 from 216 reviews, with a contact claim of 3–500 V AC, an LCD, a beep, non-contact mode and a Phillips tip. The specification names CE, EN 61010-1, RoHS and UKCA, and no CAT figure. Model lines say both KTS02 and KTS01. Included components say two AAA cells; reviews describe one. Contact readings are praised. 12 V DC is a repeated miss, and non-contact mode is called too broad.
Pros
Cons
Best for: A pocket AC check with a screen, if you do not need a slotted terminal driver
Less suitable: 12 V DC on a vehicle, or UK faceplate screws that want a slotted tip
Specifications
Common questions
Does the KAIWEETS pen test without touching the conductor?
The bullets claim a non-contact mode as well as contact AC testing from 3 V to 500 V. Reviews say the non-contact alarm is very sensitive.
Will it read 12 V DC?
Several reviews say it does not read 12 V vehicle supplies or 9 V DC. The listing measurement types are AC voltage, continuity, live wire and non-contact detection.
What tip does it have?
The style name is a Phillips head. Reviews note there is no interchangeable blade.
The ZenithQuest pair is £6.59 with a 12–220 V claim, a neon, and magnetic flat and cross-head tips in the bullets. Only two UK review texts are stored, against a 4.2 rating from 8. One says the tool is smaller than expected. The other says the tips sheared on first use. No standard number is printed. The 220 V ceiling sits under nominal UK mains of 230 V.
Pros
Cons
Best for: No stored review describes a job this pair completed
Less suitable: A UK 230 V socket, or any screw you need the tip to survive
Specifications
Common questions
What voltage is printed?
The bullets say 12 V to 220 V. There is no 230 V or 250 V figure on the listing.
What did the reviews say?
One of the two reviews says it is smaller than expected. The other says the tips sheared on first use and calls it a waste of money.
Is a standard named?
No. The listing claims a neon, a PVC handle and magnetic flat and cross-head tips.
The Cfanibo pair is £6.46 with a 12–220 V AC claim and two pieces. The amazon.co.uk rating on the listing is 1.0 from 3 reviews. The only review text is negative and gives no detail. Rank on the listing is 145 in Voltage Testers. No standard is named.
Pros
Cons
Best for: No stored review describes a job this pair completed
Less suitable: Anyone using the star rating as a filter. The listing shows 1.0 from 3 reviews
Specifications
Common questions
What does the only review say?
The title is Bad and the text is No good. The rating line is 1.0 from 3. The other two reviews are not stored.
What voltage is claimed?
The bullets say AC 12 V to 220 V. The minimum operating voltage field says 12 V. There is no 250 V figure.
Is a standard named?
No. The bullets claim a neon, an insulated PVC handle and magnetic flat and cross-head tips.
Scores run from 0 to 100 on the amazon.co.uk listings captured on 15 October 2026. Stars, review volume, listing clarity, fit to UK 230 V mains and price are weighted below. Deductions cover a dead-on-arrival theme, sheared tips, a 12 V claim the reviews reject, and a power-source line the reviews contradict. There is no lab test. The top pick is the highest score. The Rolson pair takes best value: it ties the ebuyerfix pair on that reading, and the higher UK review count takes the badge.
Stars
40%The amazon.co.uk star rating, divided by 5 and scaled out of 40. No star line is borrowed from another shop.
Review volume
20%Out of 20, from the amazon.co.uk review count on that listing. Under 5 reviews scores 2. 1,000 or more scores 18.
Listing clarity
15%Out of 15, for voltage lines that match, a named standard, and a stated tip and piece count. A title that disagrees with the bullets scores low.
UK mains fit
15%Out of 15, for a printed range that covers nominal 230 V and a slotted tip. A 220 V ceiling or a Phillips-only tip scores lower.
Price
10%Out of 10, from the amazon.co.uk shelf price in the 15 October 2026 capture. Under £5 scores 9. Over £15 scores 4.
Decide what the glow is allowed to mean before you compare the price. A lamp that strikes means you treat the point as live. A lamp that stays dark is not a dead circuit. Prices below are the eight amazon.co.uk shelf prices captured on 15 October 2026. We did not run a lab test. DIN VDE 0680-6 on a listing is a phase-tester claim. It is not an HSE GS38 approval, and it does not prove the installation dead.
A voltage tester screwdriver in UK shops is usually a single-pole neon phase tester. It is a slotted driver with a neon and a metal cap. You rest a finger on the cap and put the tip on a conductor. If the lamp glows, treat that point as live. If it does not glow, the lamp did not strike. That is not proof the conductor is dead. Safe isolation uses a two-pole indicator to BS EN 61243-3, proved before and after. NICEIC’s steps use that indicator and a proving unit.
The PaulStore title says 100–500 V and VDE. The bullets say 100–250 V. Quote the line you can point at. Do not stitch the two figures into one range.
A 12 V figure on a neon is not a credible strike voltage. ZenithQuest and Cfanibo print 12–220 V. KAIWEETS reviews say 12 V DC does not read. Leave vehicle electrics out of this category.
Reviews often call the neon dim in daylight. On the Eightwood pen that theme includes indoor use, and some units did not work. A lamp you cannot see is not an off circuit. Prove the tool on a known live point, and do not trust only one driver in a pair.
UK mains are nominally 230 V. Read the title and the bullets as separate lines. A printed 100–250 V or 120–250 V covers 230 V. The Bosch SL3x65 prints AC 120–250 V. The Rolson 28110, the ebuyerfix pair and the PaulStore bullets print 100–250 V. The PaulStore title also says 100–500 V. Do not merge those into one range. Eightwood prints 220 V as a single figure, with no tolerance on the listing. ZenithQuest and Cfanibo print 12–220 V.
UK terminals want a slotted blade. The pairs quote about 140 mm and 190 mm. A Phillips-only pen is a poor terminal driver. The KAIWEETS style is a Phillips head, and reviews note there is no interchangeable blade. Cheap tips bend and shear. Rolson reviews include a tip that chipped or folded. ebuyerfix reviews include a snapped head. One ZenithQuest review says the tips sheared on first use. Reviews often call a neon dim in daylight.
Three typical situations, each with a recommendation from this comparison.
You are changing a pendant or a socket and you want one slotted tester with a named phase-tester standard. You will not read a dark lamp as dead. The Bosch SL3x65 is about £5.99, rated 4.6 from 793 reviews, AC 120–250 V, with DIN VDE 0680-6 on the listing.
You want two slotted lengths for terminals of different reach, a low shelf price and a long UK review file. The Rolson 28110 is about £4.23, rated 4.4 from 1,913 reviews, at 100–250 V. Some reviews call the neon dim and the tips easy to chip.
You want an LCD and a beep, including a non-contact mode, and a Phillips tip is acceptable. The KAIWEETS pen is about £16.98, rated 4.3 from 216 reviews. Reviews say 12 V DC does not read, and the listing names no CAT figure.
The top pick is the Bosch Professional SL3x65 at about £5.99, rated 4.6 from 793 reviews: one slotted glow-lamp tester, AC 120–250 V, with DIN VDE 0680-6 named on the listing. That line is a phase-tester claim, not a GS38 approval, and the measurement-type line still says voltmeter. The best value is the Rolson 28110 at about £4.23, two slotted lengths at 100–250 V, rated 4.4 from 1,913 reviews. The ebuyerfix pair scores the same 77 and costs about £3.89, with fewer reviews and no named standard, so it does not take the badge. A dark neon is not a dead circuit.
Bosch SL3x65 phase tester
Highest score, 84. The listing names DIN VDE 0680-6 and AC 120–250 V, with 4.6 from 793 reviews and no battery. It is not a two-pole dead test.
Rolson 28110 2-piece pair
About £4.23 for two slotted lengths at 100–250 V, rated 4.4 from 1,913 reviews. A dim neon and chipped tips stay in the reviews.
Editorial
Products Compared publishes British-English buying guides based on amazon.co.uk listings and public UK sources. We do not run a lab and we do not invent test scores.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources and the amazon.co.uk listings in this comparison. Listings captured 15 October 2026. Page updated October 2026.
This page contains affiliate links to amazon.co.uk (tag pcuk26-21). If you buy through them, we may earn a commission at no extra cost to you. Prices, stars and review counts are from the amazon.co.uk listings captured on 15 October 2026. We did not run a lab test.
