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EMF 390 display pageGQ Electronics UK Europe
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EMF Meter, Advanced GQ EMF-390 Multi-Field Electromagnetic Radiation Detector 3-in-1 EMF ELF Meter & RF Spectrum Analyzer, Cell Tower Smartmeter Signal Detector RF up to 10G Data Logger

4.5 out of 5 stars 3,067 ratings
Amazon's Choice highlights highly rated, well-priced products available to ship immediately.
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£81.21 with 29 percent savings
Was: £114.00
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About this item

  • Multiple high sensitivity sensors installed for detecting Power line, Smart meter, Cell phone, Microwave etc.
  • Identify/recognize the common possible sources, such as Power line, Cell Tower, Microwave, Static etc.
  • Safety suggestion lets you understand current situation instantly.
  • RF up to 10Ghz and EMF up to 400Khz
  • Built-in RF Spectrum analyzer and GQ RF Browser for real time RF monitoring.

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Product Description

  • The GQ EMF-390 advanced multi-function digital EMF ELF meter (Patent pending) is designed and developed by GQ Electronics, Seattle, USA. It is a portable and convenient device. It can be used in general purpose test, detection and other scientific applications. Such as Power Line, WiFi, Cell phone, Cell tower, Microwave, Smart Meter, etc. The device integrated features include three axis Electromagnetic Fields, Electric Field, Radio Frequency (up to 10Ghz) and a bonus feature RF Spectrum Power Analyzer(six bands up to 2.504Ghz).
  • The meter is able to identify/recognize the common source from EMF/RF measured, such as Power Line, WiFi/Cell phone, Cell tower, Microwave etc. It also comes with built-in audible and visual alarm. It can be used for EMF, ELF, EF, RF detection and monitoring both indoor and outdoor, as well as in other similar environments.
  • The EMF-390 has built-in flash memory for data logging, it can log the real-time data every second with timestamp. The history data can be be downloaded when the device linked to a PC. The free PC software can be downloaded from website.
  • The unique GQ RF Browser feature visualizes the RF radiation precisely on screen. With RF Browser, user is able to see high speed RF signal, such as Smart meter, cell phone transmission, estimates Digital RF transmission data in bytes and RF power spectral histogram.
  • The meter has installed multiple sensors to ensure maximum scale/range measurement and highest accuracy. .
  • With open communication protocol, user is able to send commands to the unit to get all data remotely. This let the device be easier to integrate to any other system,
  • The device is equipped with a USB port, utilized for communication and external power supply/charging of internal rechargeable Li-Ion 3.7V battery.
  • GQ EMF meter is all you need to detect EMF, ELF, EF and RF radiation

EMF-390

Specification

EMF (Electromagnetic Field) Triple axis (X, Y, Z) Range: 0.0~500mG, 0.0 to 50µT, Resolution: 0. 1mG

EF (Electric Field): 0V/m to 1000V/m, Resolution: 1 V/m

RF (Radio Frequency Field) Range: 0.02µW/m² ~ 9999mW/m², Resolution: 0.01μW / m², 1pW/cm ², 1dB, up to 10GHz.

5 bands RF Spectrum Analyzer.

EMF-390

New display maximizes the amount of information

  • All-in-One display lets you see reading from all sensors at once.
  • Advanced features and multi-sensors to ensure best detection from EMF, EF and RF.
  • Compact design for easy testing and measurement.
  • Safety suggestion lets you understand current situation instantly.
  • Radiation source recognition provide fastest way to find out the radiation source.

EMF-390

Classic display option is quick to adapt application

  • With traditional analog style display, the data becomes even easier and faster to understand.
  • Left and right vertical bars are also indications of the EF and EMF radiation level in glance.
  • Safety suggestion in large font for easier reading.
  • Real Time clock displays current time for time sensitive testing.
  • Front LED visualizes alarm when triggered.

Enriched features support enriched applications

EMF-390

Real-Time EMF EF Graph

  • Presents exact changes of EMF and EF radiation level been detected in past 45 seconds.
  • The right side of graph shows a reading for both EMF and EF.

EMF-390

RF Spectrum Analyzer

  • Advanced users are able to use built-in RF Spectrum Analyzer to discover the RF signal power in a specific frequency.
  • This graph shows two RF signal that has been detected at same time: Microwave oven and WiFi signal.

EMF-390

RF Browser

  • GQ RF Browser is a unique feature of GQ EMF detector. The real-time graph is based on high sensitivity sensors.
  • This graph shows a close by cell phone that just received a text message.

EMF-390

Real-Time Power Distribution Histogram

  • RF power distribution is another important factor to let us understand how the RF radiation power distributed during the period.
  • This graph shows the highest RF power is 6.47% of total at 0.049 milliWatts per square meter during the testing period.

EMF-390

Unlimited Applications

  • Detecting EMF, ELF, EF, RF from all electronics devices but not limited to.
  • EMF-390 can do more than what you see here. It is not only a tool, but also a teacher. User will learn and discover invisible world from it.

Product Information

Technical Details

Manufacturer ‎GQ Electronics LLC
Part Number ‎EMF-390
Product Dimensions ‎13.97 x 7.62 x 2.54 cm; 283.5 g
Batteries ‎1 LR44 batteries required.
Item model number ‎EMF-390
Colour ‎Gray
Power Source ‎Corded Electric
Item Package Quantity ‎1
Plug profile ‎Wall Mount
Batteries included? ‎No
Batteries Required? ‎No
Battery Cell Type ‎Lithium Ion
Battery description ‎Lithium-Ion
Item Weight ‎283 g

Additional Information

ASIN B07JGJ897T
Customer Reviews
4.5 out of 5 stars 3,067 ratings

4.5 out of 5 stars
Best Sellers Rank
Delivery information: We cannot deliver certain products outside mainland UK ( Details). We will only be able to confirm if this product can be delivered to your chosen address when you enter your delivery address at checkout.
Date First Available 30 Oct. 2018

Warranty & Support

Amazon.com Return Policy:Regardless of your statutory right of withdrawal, you enjoy a 30-day right of return for many products. For exceptions and conditions, see Return details.

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EMF Meter, Advanced GQ EMF-390 Multi-Field Electromagnetic Radiation Detector 3-in-1 EMF ELF Meter & RF Spectrum Analyzer, Cell Tower Smartmeter Signal Detector RF up to 10G Data Logger


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Safety and product resources

Safety documents

Customer reviews

4.5 out of 5 stars
3,067 global ratings

Customers say

Customers find the EMF meter to be a brilliant device with multiple functions and accurate readings, particularly appreciating its ability to display all three values on one screen. They find it easy to use and consider it great value for money. The frequency aspect receives mixed feedback, with one customer noting issues with RF signals being transmitted in high pulses, while the noise level aspect is negative, with one customer reporting problems with the beeping sound.

36 customers mention ‘Functionality’32 positive4 negative

Customers find that the EMF meter works well, with one customer noting it has more menu choices than advertised.

"...It also covers WiFi and 3G/4G up to 10GHz. There are various modes that allow signals to be measured as a numerical display and for RF as a spectral..." Read more

"It works. I cannot comment on durability or value for money...." Read more

"...This is a very useful functional item. It's a tad more useful than detectors that are higher priced. More functional menu choices than advertised...." Read more

"...is half the price of equivalent competitors and provides everything a budding home worker or concerned parent could possibly need...." Read more

25 customers mention ‘Accuracy’20 positive5 negative

Customers find the EMF meter accurate, with one customer noting its ability to measure all three fields and another highlighting its spectral response for detailed frequency analysis.

"...In the basic mode it is great for use in comparative measures , the display is grey and black, not high deff but good enough and battery life is..." Read more

"The device seams to measure accurately, but I’m a bit annoyed that the beeping sound is faulty and sometimes it sounds distorted as if it was..." Read more

"I purchased this because it was the only one to measure all three fields. Measuring the emission from my mobile was an unpleasant surprise!..." Read more

"Excellent device BUT for some reason the EF reading jumps up to very high readings the moment I'm near it, touch it or hold it!!?..." Read more

20 customers mention ‘Quality’18 positive2 negative

Customers praise the EMF meter's quality, describing it as a brilliant device and the best professional detector available.

"One of the Best professional EMF detector...." Read more

"Super product" Read more

"...Logical menu. For this money, it’s great product!" Read more

"Excellent device BUT for some reason the EF reading jumps up to very high readings the moment I'm near it, touch it or hold it!!?..." Read more

16 customers mention ‘Ease of use’15 positive1 negative

Customers find the EMF meter easy to use.

"Excellent product Does what it says on the box , easy to use and an important buy if you are buying and new house or suspect your on is making you..." Read more

"...Easy to use and sensitive enough to be able to easily sense check that the meter readings are reliable (which they are with mine)...." Read more

"The item is relativly easy to use and understand. once reading the manual. It comes with a card with clearly discribes safe raditaion levels...." Read more

"...all three values on one screen or can change to just one; easy to use it to scope out a room or building and find the hotspots...." Read more

16 customers mention ‘Value for money’15 positive1 negative

Customers find the EMF meter to be great value for money, with one customer noting it performs as well as an expensive professional meter.

"This meter is half the price of equivalent competitors and provides everything a budding home worker or concerned parent could possibly need...." Read more

"...Well worth to check your work place, resting place, bedroom etc. The price is reasonable comparing to functionality and other brands." Read more

"Superb broad range detector, checked against an Openreach Engineers very expensive meter and spot on correlation!" Read more

"...I highly recommend to buy. The price versus utility ratio is very high." Read more

10 customers mention ‘Display’10 positive0 negative

Customers appreciate the display features of the EMF meter, with one customer noting that it shows all three values on one screen and includes reference values for each measurement.

"A compact EMF meter, with many functions; easy to read; shows all three values on one screen or can change to just one; easy to use it to scope out..." Read more

"...There are various modes that allow signals to be measured as a numerical display and for RF as a spectral response for detailed frequency analysis...." Read more

"...device, clear instructuons, very useful card is included with reference values for each measurement." Read more

"...3 modes and several settings are presented with differing information being able to be displayed...." Read more

8 customers mention ‘Frequency’4 positive4 negative

Customers have mixed experiences with the device's frequency measurements, with some reporting accurate readings while others note issues with high pulses and power levels.

"It is a clever gadget allowing both RF and low frequency EMF from the mains and other radiating sources, e.g. pest deterrents that use EMF, to annoy..." Read more

"...the meter is reading 810 v/m on EF together with beeping, EMF went as high as 13 mg and RF went as high as 29 mw/m2 but I am used to micro..." Read more

"...give off more EF frequency / also surprising how the RF signals is transmitted in high pulses - up to 1000 mW/m2 then down to 0.001 every 12..." Read more

"...around my working area (Laptop, 2 screes etc) the level of AC radiation was ludicrous, especially from the Ikea desk lamp...." Read more

7 customers mention ‘Noise level’0 positive7 negative

Customers report issues with the device's noise level, including faulty beeping, intermittent tones, and static buildup that affects readings.

"...that sends it into alarm mode , ""ringing it's head off"" being a noise nuisance! Till its unplugged from the charge cable...." Read more

"...seams to measure accurately, but I’m a bit annoyed that the beeping sound is faulty and sometimes it sounds distorted as if it was underwater...." Read more

"Nothing used to beep. It doesn't need to beep when it shuts down. IE you can't go to sleep with it on. Moronic thoughtless engineering...." Read more

"...The only niggle when held is that static buildup will upset readings if you are not well grounded." Read more

It works and now I can better protect my family and I
5 out of 5 stars
It works and now I can better protect my family and I
Excellent product Does what it says on the box , easy to use and an important buy if you are buying and new house or suspect your on is making you unwell? after testing the house i am going to buy a block of Black obsidian to go with the orgon I currently have to neutralize the effects. well worth the price if it keeps your family safe. took a pic of it scanning the microwave which was plugged but not on? it spiked badly when switched on
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Top reviews from United Kingdom

  • Reviewed in the United Kingdom on 3 July 2020
    This meter is half the price of equivalent competitors and provides everything a budding home worker or concerned parent could possibly need. Easy to use and sensitive enough to be able to easily sense check that the meter readings are reliable (which they are with mine). Super accurate in fact, especially when held correctly (as shown in small printed instructions). I wanted it to check my home office and particularly the electric / electromagnetic field fields and radio frequencies (aka WiFi exposure) at my desk & kitchen table (for home working under lock down). With some small changes was able to reduce our exposure to all forms of invisible radiation by more than 10 times. Also was able to see change in RF in real time as I used WiFi on my iPad. I already knew that you should not hold your iPad in your hands and use WiFi but the results were an eye opener. Needless to say my desktop computer is not connected by Ethernet cable and favoured (whenever possible) over the iPad. I have also move the modem (which is really harmful at short range, shit these things should come with a serious health warning!) as far from me as possible. This device is a God send and only after I had bought this meter did I watch 'Better Call Saul'. So glad I went for this meter and would recommend to anyone remotely concerned about their health with all the debate raging over 5G
    76 people found this helpful
    Report
  • Reviewed in the United Kingdom on 5 October 2021
    This was bought for several purposes , including an educational one. 3 modes and several settings are presented with differing information being able to be displayed. The accuracy of measurement is always a difficult one to prove without spending loads of money on certified kit but comparison to friends much more expensive hardware and my own spectrum analysers show similar results. The unit presents information on the radiating source (wifi, cell tower etc) which has proven to be useful and you can focus on certain bands of the spectrum as well as the automated scans. navigating the menus is not that intuitive so I would recommend spending some time with the manual and online research . In the basic mode it is great for use in comparative measures , the display is grey and black, not high deff but good enough and battery life is extremely good . manufacture support is accessible and helpful. a nice case, wrist strap and credit card references outlining good and bad levels of exposure is also useful. You can customise the alarms and led warning as well as some of the settings but you do not get on screen help so need to read the manual
    12 people found this helpful
    Report
  • Reviewed in the United Kingdom on 1 April 2025
    Excellent device BUT for some reason the EF reading jumps up to very high readings the moment I'm near it, touch it or hold it!!? I've read the instructions, hold it at the bottom where it's supposed to be held and keep it away from my body whilst holding it, but still it jumps up. How can I get an accurate RF reading if this keeps happening!?? I'm not sure whether to send back or does it need to be calibrated!? That being said its a great little detector with lots of great features.
    One person found this helpful
    Report
  • Reviewed in the United Kingdom on 10 January 2024
    I first borrowed my friends then decided to buy my own at this very good price. I love this EMF Detector because its so easy to use as I'm a woman and rubbish with gadgets but this is so easy. It does what it says on the tin and you can choose 3 areas you want to test. Select your requirement with one button and you're off. Many thanks for producing something so easy.
    11 people found this helpful
    Report
  • Reviewed in the United Kingdom on 23 January 2025
    Whilst not a professional level device it is perfect;y capable of obtaining useable measurements. It is worth noting that users should be prepared to do a little background reading and also of the manual in order to get the best possible information. If you just want to see how much EMF is present - this may not be the meter you need
    2 people found this helpful
    Report
  • Reviewed in the United Kingdom on 23 April 2021
    A compact EMF meter, with many functions; easy to read; shows all three values on one screen or can change to just one; easy to use it to scope out a room or building and find the hotspots. One thing that puzzled me for a while was that I was getting high EF values when holding the meter but low values without me holding it. After I turned off the mains supply (at the main fuse box to the house) the readings (when held) dropped to the same values as when not held. So it seems that my body is acting as an amplifier of the electric field inside the house. As soon as i step outside, the reading drops off again. More investigation needed but so far i am very happy with this meter. No idea as to accuracy, except I am getting standard RF values for my phone and wi-fi box. Would buy again.
    14 people found this helpful
    Report

Top reviews from other countries

Translate all reviews to English
  • anonym
    5.0 out of 5 stars Macht einen guten Eindruck. Genauigkeit bei EF-Messung konnte im Test nachvollzogen werden.
    Reviewed in Germany on 9 March 2025
    Das Gerät wird nett verpackt in einer kleinen Kartonschachtel geliefert, zusammen mit einem USB-C Ladekabel, einem Etui, einer Kurzanleitung sowie eine Infokarte mit empfohlenen Grenzwerten. Beim Auspacken fällt positiv auf, wie sauber das Gerät verarbeitet wurde. Die Langversion der Anleitung kann/muss beim Hersteller heruntergeladen werden.

    Erste, grobe Tests zeigen, dass das Gerät gut zu funktionieren scheint. Handy, Microwelle, Wi-Fi-Router und Netzgeräte werden richtig erkannt. Wie genau die dabei angezeigten Werte sind lässt sich natürlich nicht ohne weiteres erkennen. Eine absolut korrekte Einschätzung liesse sich mit einem korrekt kalibrierten Zweitgerät aus einem höheren Preissegment erreichen. Elektro-magnetische Wellen verlieren die Stärke im Quadrat zur Entfernung, so dass schon geringe Unterschiede im inneren Aufbau der Geräte, der Lage der Antennen sowie wie sie in der Hand gehalten werden, grosse Unterschiede in der Anzeige verursachen.

    Die Einheit Volt pro Meter (V/m) beschreibt die elektrische Feldstärke (E) und gibt an, wie groß die elektrische Spannung (U) pro Meter Abstand (d) zwischen zwei Metallplatten ist. Sie zeigt also, wie stark eine elektrische Kraft auf eine Ladung in diesem Feld wirkt:

    Die Formel zur Berechnung der elektrischen Feldstärke lautet: E = U / d

    So habe ich einen entsprechenden Messaufbau erstellt um die Genauigkeit des Gerätes auf die Probe zu stellen.
    Bei einer Spannung (U) von ca. 240,4 V (AC, Hausnetz) und einem Abstand (d) von 0.3 Metern misst das Gerät ganz nahe (ca. 5 mm Abstand!) an der Platte die mit dem Aussenleiter (Phase) verbunden ist eine elektrische Feldstärke (E) von 802.5 V/m (siehe Bild), das ist ein sehr guter Wert! Rein rechnerisch hat das Feld ein Stärke von 801.3 V/m, damit liegt das Gerät, extrem nahe am Soll-Wert. Wenn man das Gerät Richtung der anderen Platte, die mit den Neutralleiter verbunden ist, verschiebt sinkt der angezeigte Wert bis auf ca. 150 V/m. Das ist bei jedem EMF-Meter, das ich bisher getestet habe der Fall. Warum sich zwischen den beiden Metallplatten nicht überall die selbe elektrische Feldstärke messen lässt, ist mir mit meinen bescheidenen, physikalischen Kenntnissen nicht bewusst.

    Der Test zeigt, dass das Messresultat für ein EF-Messgerät in dieser tiefen bis mittleren Preisklasse eine absolut solide Leistung ist.

    Das Foto zeigt die Messung bei angelegter Spannung (240,4 V), das Gerät ist sehr nahe an der Platte positioniert, die mit dem Aussenleiter (Phase) verbunden ist. Würde ich das Gerät noch naher an die Platte verschieben, würde der der Wert schnell 1000 V/m übersteigen.

    Alles in allem liefert dieses Gerät ein sehr gutes Messresultat - zumindest bei EF-Messunngen. Eine grobe Einschätzung der Feldstärke(n) kann also durchaus vorgenommen werden, und das Bewusstsein und das Wissen über dieses Thema allgemein kann erweitert werden. Grundsätzlich sollte man sich aber schon mit dem Thema befassen, bevor man anderen Leuten so ein Gerät unter die Nase hält und ihnen Angst einjagt, weil es hier oder dort rot blinkt! Wir sollten nicht vergessen, dass Elektro-Magnetismus eine Urkraft ist, ohne die unser Universum, und damit die Welt und das Leben nicht existieren könnten. Und wer sich ständig auf Flucht vor Elektro-Magnetsichen Wellen (oder dem per se negativ behafteten Wort "Strahlung") befindet und meint in der Natur draussen fände sei alles besser, dem sei hier gesagt, dass allein das sichtbare Licht (ebenso eine Elektro-magnetische Welle!) als relativ kurzwellige Strahlung an einem hellen Tag schon ca. 100 W auf den menschlichen Körper wirft und damit Mikrowelle-Ofen, Handy und Co. an Stärke und höher-energetischer Kurzwelligkeit um ein hundert- oder tausenfaches übertrifft! Und nicht zu vergessen, dass jeder Mensch selbst relativ kurzwellige elektro-magnetische Wellen in Form von Infrarot-Strahlung in für uns spürbarer Wärme abgibt.

    Fazit: Das Gerät ist noch relativ preisgünstig und liefert dennoch ein gutes Ergebnis.
    Customer image
    anonym
    5.0 out of 5 stars
    Macht einen guten Eindruck. Genauigkeit bei EF-Messung konnte im Test nachvollzogen werden.

    Reviewed in Germany on 9 March 2025
    Das Gerät wird nett verpackt in einer kleinen Kartonschachtel geliefert, zusammen mit einem USB-C Ladekabel, einem Etui, einer Kurzanleitung sowie eine Infokarte mit empfohlenen Grenzwerten. Beim Auspacken fällt positiv auf, wie sauber das Gerät verarbeitet wurde. Die Langversion der Anleitung kann/muss beim Hersteller heruntergeladen werden.

    Erste, grobe Tests zeigen, dass das Gerät gut zu funktionieren scheint. Handy, Microwelle, Wi-Fi-Router und Netzgeräte werden richtig erkannt. Wie genau die dabei angezeigten Werte sind lässt sich natürlich nicht ohne weiteres erkennen. Eine absolut korrekte Einschätzung liesse sich mit einem korrekt kalibrierten Zweitgerät aus einem höheren Preissegment erreichen. Elektro-magnetische Wellen verlieren die Stärke im Quadrat zur Entfernung, so dass schon geringe Unterschiede im inneren Aufbau der Geräte, der Lage der Antennen sowie wie sie in der Hand gehalten werden, grosse Unterschiede in der Anzeige verursachen.

    Die Einheit Volt pro Meter (V/m) beschreibt die elektrische Feldstärke (E) und gibt an, wie groß die elektrische Spannung (U) pro Meter Abstand (d) zwischen zwei Metallplatten ist. Sie zeigt also, wie stark eine elektrische Kraft auf eine Ladung in diesem Feld wirkt:

    Die Formel zur Berechnung der elektrischen Feldstärke lautet: E = U / d

    So habe ich einen entsprechenden Messaufbau erstellt um die Genauigkeit des Gerätes auf die Probe zu stellen.
    Bei einer Spannung (U) von ca. 240,4 V (AC, Hausnetz) und einem Abstand (d) von 0.3 Metern misst das Gerät ganz nahe (ca. 5 mm Abstand!) an der Platte die mit dem Aussenleiter (Phase) verbunden ist eine elektrische Feldstärke (E) von 802.5 V/m (siehe Bild), das ist ein sehr guter Wert! Rein rechnerisch hat das Feld ein Stärke von 801.3 V/m, damit liegt das Gerät, extrem nahe am Soll-Wert. Wenn man das Gerät Richtung der anderen Platte, die mit den Neutralleiter verbunden ist, verschiebt sinkt der angezeigte Wert bis auf ca. 150 V/m. Das ist bei jedem EMF-Meter, das ich bisher getestet habe der Fall. Warum sich zwischen den beiden Metallplatten nicht überall die selbe elektrische Feldstärke messen lässt, ist mir mit meinen bescheidenen, physikalischen Kenntnissen nicht bewusst.

    Der Test zeigt, dass das Messresultat für ein EF-Messgerät in dieser tiefen bis mittleren Preisklasse eine absolut solide Leistung ist.

    Das Foto zeigt die Messung bei angelegter Spannung (240,4 V), das Gerät ist sehr nahe an der Platte positioniert, die mit dem Aussenleiter (Phase) verbunden ist. Würde ich das Gerät noch naher an die Platte verschieben, würde der der Wert schnell 1000 V/m übersteigen.

    Alles in allem liefert dieses Gerät ein sehr gutes Messresultat - zumindest bei EF-Messunngen. Eine grobe Einschätzung der Feldstärke(n) kann also durchaus vorgenommen werden, und das Bewusstsein und das Wissen über dieses Thema allgemein kann erweitert werden. Grundsätzlich sollte man sich aber schon mit dem Thema befassen, bevor man anderen Leuten so ein Gerät unter die Nase hält und ihnen Angst einjagt, weil es hier oder dort rot blinkt! Wir sollten nicht vergessen, dass Elektro-Magnetismus eine Urkraft ist, ohne die unser Universum, und damit die Welt und das Leben nicht existieren könnten. Und wer sich ständig auf Flucht vor Elektro-Magnetsichen Wellen (oder dem per se negativ behafteten Wort "Strahlung") befindet und meint in der Natur draussen fände sei alles besser, dem sei hier gesagt, dass allein das sichtbare Licht (ebenso eine Elektro-magnetische Welle!) als relativ kurzwellige Strahlung an einem hellen Tag schon ca. 100 W auf den menschlichen Körper wirft und damit Mikrowelle-Ofen, Handy und Co. an Stärke und höher-energetischer Kurzwelligkeit um ein hundert- oder tausenfaches übertrifft! Und nicht zu vergessen, dass jeder Mensch selbst relativ kurzwellige elektro-magnetische Wellen in Form von Infrarot-Strahlung in für uns spürbarer Wärme abgibt.

    Fazit: Das Gerät ist noch relativ preisgünstig und liefert dennoch ein gutes Ergebnis.
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    Report
  • 瑞穂
    4.0 out of 5 stars 重症患者には不向き
    Reviewed in Japan on 1 July 2024
    高エネルギーの充電式リチウムイオン電池が使用されています。
    電磁波過敏症の重症者は、充電式リチウムイオン電池から放出される低周波電磁波で
    病状が悪化しかねないので、お勧めしません。

    高周波と低周波の両方を測定できるなど性能はよいので
    普通の人には問題ないと思います。
  • Cliente Amazon
    5.0 out of 5 stars Larga bateria
    Reviewed in Spain on 28 April 2025
    Excelente.Larga bateria y muy sensible
  • Nick Slavov
    5.0 out of 5 stars It is a good buy.
    Reviewed in Australia on 1 January 2025
    Very good instrument and very fast and accurate delivery.
  • Dav Mac
    5.0 out of 5 stars Works effectively
    Reviewed in Canada on 14 October 2024
    Used this clever detector to pinpoint location of upstairs neighbour's router which I discovered was beaming down unacceptable levels of emf on my sweet little face as I slept.

    So I pinned about 80 square feet of thick aluminum BBQ foil to the ceiling in the specific area of maximum intensity. That totally mitigated it.

    Flatmate ordered new tv/wifi service, and they brought in a fancy new router claiming it is soooo fast and wonderful. I tried the service out with my ethernet and it's no faster than the previous router. But now emitting MASSIVE! EMF. The obnoxious installer is literally kneeling over the powered up router for half an hour working away while claiming It's an insane conspiracy theory that these routers are even mildly dangerous.

    I certainly hope this installer doesn't get testicular cancer...

    As soon as he left I put the router in a crude Faraday cage in the form of a loose lidded turkey cooker. The emf levels dropped down to sane levels, and somehow roomate's wifi still works perfectly fine even through this metal cooker

    Also found big EMF spikes at traffic intersections. But that has ABSOLUTELY NOTHING! to do with all the vehicle accidents and spaced out drivers seizing up and flattening poor pedestrians on the crosswalks these days.

    All in all, this device gives a person an idea of what's going on.

Product Summary: EMF Meter, Advanced GQ EMF-390 Multi-Field Electromagnetic Radiation Detector 3-in-1 EMF ELF Meter & RF Spectrum Analyzer, Cell Tower Smartmeter Signal Detector RF up to 10G Data Logger

From GQ

4.5 out of 5 stars, 3,067 ratings

Customer reviews

50+ bought in past month

Price

One-time purchase: £81.21 29% Savings

List Price: £114.00

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About this Item

  • Multiple high sensitivity sensors installed for detecting Power line, Smart meter, Cell phone, Microwave etc.
  • Identify/recognize the common possible sources, such as Power line, Cell Tower, Microwave, Static etc.
  • Safety suggestion lets you understand current situation instantly.
  • RF up to 10Ghz and EMF up to 400Khz
  • Built-in RF Spectrum analyzer and GQ RF Browser for real time RF monitoring.

Product description

The GQ EMF-390 advanced multi-function digital EMF ELF meter is designed and developed by GQ Electronics, Seattle, USA. It is a portable and convenient device. It can be used in general purpose test, detection and other scientific applications. Such as Power Line, WiFi, Cell phone, Cell tower, Microwave, Smart Meter, etc. The device integrated features include three axis Electromagnetic Fields, Electric Field, Radio Frequency and Radio Spectrum Power Analyzer. The meter is able to identify/recognize the common source from EMF/RF measured, such as Power Line, WiFi/Cell phone, Cell tower, Microwave etc. It also comes with built-in audible and visual alarm. It can be used for EMF, ELF, EF, RF detection and monitoring both indoor and outdoor, as well as in other similar environments. It can continually monitor the radiation while it is connected with a USB port as power supply. When the device is connected to a PC, PC software can download the radiation data to the computer and the user is able to analyze those data later. The device also has a high contrast black/white LCD module and one front LED indicator. The unique GQ RF Browser feature visualizes the RF radiation precisely on screen. With RF Browser, user is able to see estimated Digital RF transmission data in bytes and RF power spectral histogram. EMF-390 has built-in flash memory and it is able to log the real-time data EMF,EF and RF power every second. User is able download the data later from a free software EMF-PRO.

Product Guidance & Documents

User Guide (PDF)

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