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

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

Great piece of kit and very informative and reassuring to have. It seems to pretty much support the usual guidelines about not being too close to a router or mobile phone (and similar device) when it is active and connected if one goes by the limit settings of this device. The the thing that is perhaps surprising is that levels of EF (electrical field) seems to be the main aspect to focus on in my setting, meaning when using a device that is not battery powered but connected to the mains, or if it is connected to a device that is connected to the mains also, including a charging phone then the level goes over the limit, at least from what I found. This is something that people, in my opinion, tend to overlook. Disclaimer: I am writing this for the benefit of anyone who cannot afford their own one at the moment, or who has one and is looking to compare results, these are simply the measurements that I took with this device which I bought from Amazon and they are not a recommendation of any kind and I am not encouraging any course of action. With this I found that the things that were over the limit according to the device in the room where I work and the house in general were the EF levels of being within about 5-10 centimetres of any device that is plugged into the mains, and increasing greatly in level the closer one gets within that distance range. This included mobile phones if they were charging at the time of testing. This also included headphones plugged into a mains powered device. If you don't believe this then test it for yourself. Regarding RF levels, it went above the levels when under around 10-15 centimetres from the router and several centimetres from the phone if it was on and connected (check it for yourself). The only thing it doesn't do is differentiate between frequencies at higher levels, it only does that, seemingly, below around 2.5 GHz, which I must say I had not gathered from the product details. No problem really though, as the price is not that high and it does what I needed it for, which is checking if appliances and devices in the household are exceeding the limits, especially as I work all day on these devices.

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.

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

I received new item directly from manufacture. Very well designed with German common sense and precision. Brilliant little device. Measures all you need to know in one go. Tells you the summary in simple and smart way. I discovered things I've never suspected about home devices - the manufacturers don't tell you about. Well worth to check your work place, resting place, bedroom etc. The price is reasonable comparing to functionality and other brands.

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.

I bought this meter because it was at an affordable price, many features and I hoped it would do the job of other more expensive meters. It's a good meter with many functions, but I'm not sure how accurate it really is. It will give a fairly good reading for all microwave and RF radiation and can detect magnetic and electric fields. The RF and frequency readings in different modes seem to be different, which doesn't make much sense to me. There is a manufacturers forum, but I've never been happy with the answers given, that don't make sense. However, at least there is a support forum for any issues. Maybe it's accurate and where I live, but I seem to get static field readings of 1000 volts near energized appliances such as a computer, but also were circuits are not energized and where there should be no electric fields. This seems way off. The manufacturer sent me a new firmware upgrade, but this didn't improve the readings. All I can say is you get what you pay for, when it comes to RF meters.

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.

I tested the device under various conditions, and the build quality is excellent. I really like this type of display because it’s highly energy-efficient, and the screen remains perfectly readable in direct sunlight even without the backlight. The readings appear to be accurate and realistic, unlike the phantom readings I used to get with my old BR-9A. Another major advantage is that the battery is removable, and it uses the widely available 18650 cell. That’s a huge plus in my opinion. Overall, I’m very satisfied with the device. The only thing I didn’t like is the way the PC connection is implemented. The software feels rather unfinished, and without a proper data logging feature, connecting it to a computer doesn’t offer much practical value. Hopefully, future software updates will address this issue. That said, this is only a secondary feature. I definitely recommend this device—at this price, I simply couldn’t find anything better! 🙂👍

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。

Very good instrument and very fast and accurate delivery.

Y digo aparentemente porque no tengo un calibrador para estar seguro de que lo que mide es el valor real. Pero estoy encantado de su funcionamiento, con una pantalla que te permite visualizar a la vez los 3 tipos de radiación y muchas opciones de visualizar los resultados, incluyendo gráficos. Es muy intuitivo y fácil de manejar a pesar del único defecto que le veo, que no tiene instrucciones en español.

Je l'ai acheté pour pouvoir détecter les fréquences qui circulent chez moi, car depuis plus d'un an je me demande pourquoi j'ai soudainement des brûlures sur les jambes et plus souvent sur les bras. Je ressens des sensations d'aiguilles dans le corps, j'ai des démangeaisons soudaines. L'appareil m'a permi de constater que c'est bien en présence de radio fréquence RF qui permet ces inconforts. Le EMF-390 est déjà complèment chargé à l'arrivé et la pile dure quasi 2 jours car je l'apportais avec moi partout où j'allais et la nuit je le tenais ouvert pour que si je me réveille avec un malaise comme décrit plus haut, je pouvais le voir tout de suite. Il est facile à comprendre, l'écran est lumineux, il a un bip sonore quand c'est élevé, il est long à décharger mais il prend tout de même quelques heures pour le charger. Fait cocasse, mon chat a fait monter la lecture du EF à plus de 900vm (en haut de 500vm on doit éviter de rester dans la zone...) loll