The best EMF meters, compared.
Top pick: TriField TF2 with black soft pouch Best value: ERICKHILL EMF Meter RT-100 – A numeric screen at about £31 with 4.3 from 6,770 ratings. The 0.4 µT alarm is a product setting, and accuracy complaints stay in the file. Updated October 2026.
An EMF meter on amazon.co.uk is a handheld reader for electric fields, magnetic fields, radiofrequency fields, or a mix of those. You might check a mains appliance or a ghost-hunting prop. A useful listing names the field and the frequency band, then gives a number in milligauss or microtesla rather than five colour steps. Puts the usual background magnetic field in homes at about 0.01 to 0.2 µT (0.1 to 2 mG). A red LED around 20 mG is 2 µT. A maker’s colour or alarm is not that figure. None of the twelve is a lab instrument, a medical test or a ghost detector. The [EMF meter buying guide](/hub/measuring-equipment/emf-meter/sub/emf-meter-buying-guide) covers field, axis, a number versus, and what an alarm is not. On amazon.co.uk the same shelf holds five-LED magnetic boxes and numeric meters that name more than one field.
An EMF meter on amazon.co.uk is a handheld reader for electric fields, magnetic fields, radiofrequency fields, or a mix of those. You might check a mains appliance or a ghost-hunting prop.
42 products checked · 64 hrs invested · +18,600 readers
Swipe for more
1-2 of 12
Personal buying guide
Question 1 of 2
Do you need a number you can write down?
This amazon.co.uk listing is a TriField TF2 with a black soft pouch at £199.99 and 4.9 from 41 ratings. The bullets match the other TF2 row: AC magnetic on a 3-axis sensor, AC electric, RF, peak hold and audio. Weight here is 300 g. A UK review says the backlight and sound buttons sit inside the battery flap. The rating count is far smaller than the 3,538 on B078T2R64C, so this row is the pouch variant, not a second top pick.
Pros
Cons
Best for: A TF2 buyer who specifically wants the pouch listing and accepts a much smaller rating count.
Less suitable: Anyone comparing review depth. Use B078T2R64C for that.
Specifications
Common questions
Is this a different meter from B078T2R64C?
The model number is also TF2 and the bullets match. This listing adds a black soft pouch and has 41 ratings rather than 3,538.
What does the pouch listing weigh?
300 g on this file, against 311 g on the other TF2 file.
Where are the backlight buttons?
A UK review says the screen light and audible warning buttons are inside the battery flap.
The TriField TF2 listing B078T2R64C is £198.99 with 4.6 from 3,538 amazon.co.uk ratings, the deepest review count among the three-field meters here. The bullets name AC magnetic fields on a 3-axis sensor, AC electric fields, and RF, plus peak hold, an audio indicator and a backlight. The same bullets do not print frequency ends or a percent accuracy. UK reviews describe one large knob and a learning curve, and at least one buyer returned a unit over readings they did not trust. It is the top pick in this set for separate field modes, not a certified survey.
Pros
Cons
Best for: A reader who wants separate magnetic, electric and RF modes and will pay for the longest review record here.
Less suitable: A £15 LED prop, or anyone who needs frequency ends printed on the amazon bullets.
Specifications
Common questions
What three fields do the bullets name?
AC magnetic, AC electric, and RF/microwave. Magnetic measurement is described as 3-axis. Peak hold and an audio indicator are listed.
Are frequency ends on this amazon listing?
No. The bullets do not print frequency ends. Weight is 311 g and the dimensions are 38 x 70 x 133 mm.
How many ratings are on the listing line?
4.6 from 3,538. That is the long review record in this set.
The ERICKHILL RT-50 is a five-LED meter listed at £19.99 with 4.6 from 232 amazon.co.uk ratings. The bullets state 30 Hz to 20 kHz and 0–20+ mG, with ±5%, while the technical table prints ±3% and two AAA cells. UK reviews describe a pocket unit that lights near chargers, a microwave, and wiring, and they say the battery cover needs a screwdriver. The same file does not give a numeric display. A red lamp is a colour step, not the 50 Hz public reference level.
Pros
Cons
Best for: A pocket LED check near cables, if you do not need a number.
Less suitable: Wi-Fi, a written milligauss log, or anyone who needs one clear battery type.
Specifications
Common questions
Which battery does the listing specify?
The bullets say one 9 V cell. The technical table says two AAA alkaline cells are included. Both lines are in the same file, so the cell type is unresolved.
Will it show a number in milligauss?
No. The readout is five colour LEDs over a stated 0–20+ mG span.
Does the file show a Wi-Fi frequency band?
The bullets mention Wi-Fi routers. The stated band is 30 Hz to 20 kHz.
The Bosean BH-W01 is listed at £34.98 with 4.6 from 49 amazon.co.uk ratings. Bullets describe a 2.4-inch colour screen for electric, magnetic and radiofrequency fields, with real-time, maximum and average values, plus a USB rechargeable cell. The file gives 240 g and 6.5 x 2.7 x 12.7 cm, and it does not state accuracy, axis or a frequency band. UK reviews like the screen and say it is not waterproof and not a professional meter. Forty-nine ratings is a thin file beside the RT-100’s thousands, and the part line also appears as W01/FS5000.
Pros
Cons
Best for: A mid-price colour screen for three named fields, with the thin spec sheet accepted.
Less suitable: A stated accuracy, an IP rating, or the TF2 review depth.
Specifications
Common questions
What does the screen show?
The bullets say a 2.4-inch colour display with real-time, maximum and average values for EF, MF and RF.
Is it waterproof?
A UK review says it is not waterproof or water-resistant. No IP rating is in the listing.
What is in the box?
The meter and a USB wire. Weight is 240 g.
The Eddrfy listing is the cheapest in the folder at £10.99, with 4.5 from 19 amazon.co.uk ratings. The intro states a five-LED detector from 50 Hz to 20 kHz. A later line prints 5 mGyS, which is not a magnetic-field unit and is not evidence of a dose meter. Included components are given as none. Of six UK reviews, one calls it flimsy, one found a dead battery, and one unit stayed dead after a cell swap. The star line sits on a very small count.
Pros
Cons
Best for: The cheapest LED body in the set, only if you bring a cell and ignore the mGyS line.
Less suitable: A working-out-of-the-box meter, a number, or any dose measurement.
Specifications
Common questions
What unit does the listing print?
The intro says 50 Hz to 20 kHz and five LEDs. Another line says readings up to 5 mGyS. That is not milligauss. Do not treat it as a dose meter.
Is a battery included?
The included-components line says no. One UK review found a dead cell and swapped it. Another stayed dead after a swap.
Does it have sound?
A reviewer asked for sound. The listing describes LEDs only.
The EMRSS Cornet ED98QPro5G listing is £194.99 with 4.4 from 115 amazon.co.uk ratings. Bullets claim RF from 100 MHz to 8 GHz, a low-frequency magnetic mode, an electric-field mode, light-flicker measurement, a frequency display and logging up to 50 hours, with a 9 V cell and a one-year line. The technical table’s part number is ED88T Plus, which does not match the title. UK reviews like the RF coverage and call the leaflet weak, the screen small, and the PP3 cell a nuisance. Keep both the claim and the conflict.
Pros
Cons
Best for: A reader who wants a stated gigahertz RF band, a frequency figure, and flicker mode, and will live with the part-number clash.
Less suitable: A simple 50 Hz gauss check, or anyone who wants the part number to match the title.
Specifications
Common questions
What RF band does the listing claim?
100 MHz to 8 GHz, with a stated sensitivity of 0.5 µW/m², plus a frequency display. The technical table’s part number is ED88T Plus.
Does it only do radiofrequency?
No. Bullets also name low-frequency magnetic field, electric field, and a light-flicker mode.
Which battery is included?
One 9 V cell. A UK review objects to the PP3 instead of a built-in lithium cell.
The ERICKHILL RT-100 is listed at £31.00 with 4.3 from 6,770 amazon.co.uk ratings, the largest count in this folder. The bullets give an LCD, data hold, average or peak, and an alarm when the result exceeds 0.4 µT (4 mG) or 40 V/m, with a rechargeable cell and auto-off after five minutes. Weight is 250 g. UK reviews include strong home-use praise and a run of accuracy complaints, including a phone the meter missed and a refund. The alarm point is the maker’s setting. It is the best value here for a number on screen, not a lab calibration.
Pros
Cons
Best for: A numeric home check under £40 when you want the largest review count in that band.
Less suitable: A stated accuracy, a tri-axis line, or an RF band. Accuracy complaints are in the file.
Specifications
Common questions
When does the alarm trip?
The bullets say the screen turns red and the buzzer sounds above 0.4 µT (4 mG) or 40 V/m. That is the product threshold, not a UK reference level.
Can you hold a reading?
Yes. The bullets include data hold, average or peak, a backlight, and auto-off after 5 minutes.
Is the sensor tri-axis?
The listing does not say. It says a built-in sensor and an LCD.
The KAIWEETS KEMF-2 is listed at £13.99 with 4.2 from 100 amazon.co.uk ratings. It states AC magnetic fields from 0.1 to 20 milligauss, ±5%, and 30 Hz to 20 kHz, shown on five LEDs, with a 9 V cell in the box and a weight of 100 g. UK reviews call it an easy Halloween and household meter once the lights make sense, and one notes a screw on the battery cover. There is no digit display and no radiofrequency band in the file. The axis is not stated, so one orientation can under-read a cable that runs the other way.
Pros
Cons
Best for: A low-cost LED magnetic check with a 9 V cell already listed.
Less suitable: A numeric log, radiofrequency, or a tri-axis sensor you can cite.
Specifications
Common questions
What does it measure?
The listing says AC magnetic fields from 0.1 to 20 mG, 30 Hz to 20 kHz, at a stated ±5%.
Is a battery in the box?
Yes. The listing includes one 9 V cell. A review mentions a screw on the cover.
Does it show digits?
No. Five colour LEDs only.
The ERICKHILL RT-300 is listed at £39.99 with 4.1 from 74 amazon.co.uk ratings. The bullets claim a tri-axis sensor and a simultaneous electric, magnetic and radiofrequency LCD, a muteable alarm, ±10% accuracy, a rechargeable cell and a case, at 231 g. UK reviews praise the screen and the case and call the alarms jumpy, including near static and a microwave. The listing does not print a frequency band, so a Wi-Fi claim cannot be checked from the bullets alone. At 231 g, with a case in the box, it is a bag meter, and the ±10% figure is the maker’s claim rather than a calibration certificate.
Pros
Cons
Best for: A mid-price three-field screen if you accept ±10% and no printed frequency ends.
Less suitable: A documented RF band, or a reader who wants the long TF2 review record.
Specifications
Common questions
Which fields does it claim?
Electric, magnetic and radiofrequency, with a tri-axis sensor and all three on the LCD. The bullets do not print MHz or GHz ends.
What accuracy is stated?
±10%. A carrying case and a Type-C rechargeable cell are in the box list.
Can the sound be switched off?
The bullets say the buzzer can be muted while the light and screen alarm stay on.
The YOJOCK listing is £34.19 with 4.0 from 149 amazon.co.uk ratings. Bullets give a switched MF, EF and RF meter, data hold, a maximum store, mute, a three-colour backlight, ±5%, three AAA cells and a storage box, at 225 g. The title also says Geiger counter, which the mode list does not support. UK reviews call the screen clear and the readings erratic, and more than one says not to treat the alarm as a professional result. The FUNC button switches mode, so magnetic, electric and radiofrequency are not on the screen together, and the file prints no frequency ends.
Pros
Cons
Best for: A switched three-mode screen under £35 if you ignore the Geiger word.
Less suitable: Ionising radiation, simultaneous three-field display, or a stable log. Reviews call it erratic.
Specifications
Common questions
Does it measure all three fields at once?
No. The FUNC button switches MF, EF and RF. Maximum and data hold are included.
Is it a Geiger counter?
The title says handheld Geiger counter. The bullets and the ±5% line describe EF, MF and RF modes, not counts per minute. Do not buy it for ionising radiation.
What power does it use?
Three AAA cells are included, plus a storage box. Auto-off is stated at 15 minutes.
The LATNEX MG-2000T is listed at £146.98 with 3.9 from 51 amazon.co.uk ratings. It is a triple-axis ELF magnetic meter for 30 Hz to 2000 Hz, stated range 20 to 2000 mG or 2 to 200 µT, accuracy ±3.0%, with hold, maximum and minimum, at 454 g. It does not claim electric or radiofrequency modes. The saved listing contains one UK review, which describes easy low-frequency logging and does not report a fault. Treat the written review record as thin.
Pros
Cons
Best for: An ELF-only magnetic survey in µT, not a Wi-Fi check.
Less suitable: Radiofrequency, a light hobby meter, or a buyer who wants a thick UK review file.
Specifications
Common questions
Does it measure radiofrequency?
No. The listing is a triple-axis magnetic meter from 30 Hz to 2000 Hz.
What range is stated?
20 to 2000 mG, or 2 to 200 µT, with stated accuracy ±3.0%.
How many UK reviews are in the file?
One. The listing line says 3.9 from 51 ratings. The written review is too thin to list defects.
The Spiritseek listing is £13.99 with 3.6 from 17 amazon.co.uk ratings, the thinnest star line in this set. Bullets state 1.5 to 20+ milligauss on five LEDs and a 120 g black body. The technical table disagrees with itself on the battery, and UK reviews add both a fitted 9 V PP3 and a C cell, plus drift at switch-on and a spike when the case is tapped. Frequency and accuracy are not stated. It is an LED indicator, not a numeric meter.
Pros
Cons
Best for: A cheap LED prop if you accept a thin review file and a muddled battery line.
Less suitable: Anyone who needs a stated frequency band or a settled cell type.
Specifications
Common questions
What range does the listing state?
1.5 to 20+ milligauss, shown on five LEDs. No accuracy percentage and no frequency band are in the table.
Which battery does it take?
The table says one 9 V is required, then says batteries are not included and not required, and names lithium-ion. Reviews mention a fitted PP3 and a C cell. Treat the cell as unresolved.
Does it need a warm-up?
One UK review says it wanders for a few seconds after switch-on and spikes if tapped.
Scores use the twelve amazon.co.uk listings in this comparison. There is no laboratory test and no compliance survey. Each score is out of 100, from the five blocks below. A red LED or a maker’s alarm is not Council Recommendation 1999/519/EC.
Stars
30%Up to 30 points from the amazon.co.uk star line: stars divided by five, times 30, rounded half up. This block is not the star rating times 20.
Review volume
25%Up to 25 points from how many ratings sit behind the stars. 3,000 or more scores 25. 1,000 to 2,999 scores 22. A file of 10 to 19 ratings scores 4.
Listing clarity
20%Up to 20 points when the listing names the field, prints frequency numbers, shows a numeric readout or five LEDs, names the power without a clash, and gives one accuracy figure.
Stated job
15%Up to 15 points for the job the listing states. Separate magnetic, electric and radiofrequency modes with 1,000 or more ratings score 15. A five-LED box with no band scores 5.
Price in this set
10%Up to 10 points from the shelf price among these twelve listings. Under £15 scores 10. £15 to £25 scores 8. Over £180 scores 1. A deduction applies only for a fault the other points have not already zeroed.
Name the field and the frequency before you compare the price. A five-LED box, a numeric home meter and a stated gigahertz radio band are three different jobs. A red lamp is not the public reference level.
An EMF meter is a handheld reader for electric fields, magnetic fields, radiofrequency fields, or a mix of those. On amazon.co.uk the same shelf holds five-LED magnetic boxes and numeric meters that name more than one field. People use them to poke at mains appliances, or as a light-up prop after a ghost-hunting video. None of the twelve listings here is a lab instrument, a medical test, or a ghost detector. The first check is the field and the frequency.
A magnetic box stated at 30 Hz to 20 kHz does not measure Wi-Fi, 5G or a mast. Radiofrequency needs a printed band in the megahertz or gigahertz. A Wi-Fi word in the bullets, with no gigahertz figure, does not add that band.
A red LED around 20 mG is 2 µT. The public magnetic reference level at 50 Hz is 100 µT. The RT-100 alarm at 0.4 µT or 40 V/m is the maker’s trip point. Neither figure is an ICNIRP breach or a legal limit.
A single-axis sensor under-reads unless you rotate it. Waving or tapping the case moves the reading. A Geiger word in a title is not a Geiger-Müller tube, and the Eddrfy 5 mGyS line is not milligauss.
The first decision is which field the listing names, and over which frequencies. A magnetic LED box stated at 30 Hz to 20 kHz does not measure Wi-Fi. Radiofrequency needs a printed band in the megahertz or gigahertz. Electric field is volts per metre, and it can be present with the plug in even when the appliance is off. UK mains are 230 V at 50 Hz. UKHSA describes usual home background magnetic field as about 0.01 to 0.2 µT (0.1 to 2 mG).
A single-axis sensor under-reads unless you rotate it. Choose tri-axis when the listing says so. The TF2 bullets say 3-axis magnetic, the RT-300 claims tri-axis, and the LATNEX MG-2000T is a triple-axis ELF meter. The RT-100 does not state an axis. Read the alarm before you treat a colour as a limit. A red LED near 20 mG is 2 µT. The RT-100 bullets trip at 0.4 µT (4 mG) or 40 V/m.
Three typical situations, each with a recommendation from this comparison.
You want a figure beside the fuse board or the bed, and you will move furniture rather than chase a colour. The ERICKHILL RT-100 is about £31, with 4.3 from 6,770 ratings, an LCD and a stated alarm at 0.4 µT or 40 V/m. Accuracy complaints stay in the file. It is not a lab calibration.
You have seen a five-LED box in a ghost-hunting video and you need a clear line: a flash is not a message. The KAIWEETS KEMF-2 is about £13.99, with 4.2 from 100 ratings, 0.1–20 mG, 30 Hz–20 kHz, and a 9 V cell in the box. It has no digits and no radiofrequency band.
You are worried about Wi-Fi or a mast, so you need a stated radiofrequency band. A 20 kHz gauss meter will not do that job. The Cornet-style listing claims 100 MHz–8 GHz at about £194.99, with 4.4 from 115 ratings. The technical table’s part number is ED88T Plus. That clash stays in the judgement.
The top pick is the TriField TF2 at about £198.99, with 4.6 from 3,538 ratings and separate magnetic, electric and radiofrequency modes. The amazon bullets do not print frequency ends, and it is not a certified survey. The best value is the ERICKHILL RT-100 at about £31, a numeric alarm meter with 4.3 from 6,770 ratings. The alarm at 0.4 µT is the maker’s setting, and accuracy complaints stay in the file. The other ten listings have no award.
ERICKHILL EMF Meter RT-100
A numeric screen at about £31 with 4.3 from 6,770 ratings. The 0.4 µT alarm is a product setting, and accuracy complaints stay in the file.
Editorial
Peter F. is the editor for DIY & tools at productscompared.co.uk. Comparisons in this category are checked against amazon.co.uk listings, review evidence and public UK sources.
Guides on what to look for, how to use a product, and common mistakes.
Public UK sources on home background, the 1999 reference levels, radiofrequency guidance and employer duties. Listing prices, stars and review themes are from the amazon.co.uk extracts in this comparison, dated 16 October 2026. Prices move.
This page contains affiliate links to amazon.co.uk. A qualifying purchase can earn us a commission at no extra cost to you. Scores follow the method above and the listings named here. They are not a laboratory test.
