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📡 Stay ahead of invisible waves—measure, analyze, and own your space!
The GQ EMF-390 is a professional-grade 3-in-1 electromagnetic field meter designed for precise detection of EMF, ELF, and RF signals up to 10 GHz, including 5G and smart meters. Featuring a built-in spectrum analyzer and real-time monitoring via GQ RF Browser, it offers instant safety insights powered by a reliable Lithium-Ion battery. Trusted by thousands, this compact device empowers professionals to make informed decisions about their environment.

| ASIN | B07JGJ897T |
| Battery Description | Lithium-Ion |
| Best Sellers Rank | #98,870 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #46 in EMF Meters |
| Brand | GQ |
| Colour | gray |
| Compatible Devices | Computer |
| Country of Origin | USA |
| Customer Reviews | 4.5 out of 5 stars 3,198 Reviews |
| Frequency | 10 GHz |
| Item Weight | 10 Ounces |
| Manufacturer | GQ Electronics LLC |
| Maximum Range | 10 metres |
| Mfr Part Number | EMF-390 |
| Model Number | EMF-390 |
| Mounting Type | Tabletop |
| Number of Batteries | 1 LR44 batteries required. |
| Number of Items | 1 |
| Power Source | Battery Powered |
| UPC | 723794245272 723794245364 |
| Unit Count | 1.0 Count |
S**M
Best EMF meter
Used several others and I was not sure if I was getting correct readings due to their inconsistent readings. Looking for genuine EMF measurement instrument and my search ended with this. This tiny instrument made a lot of difference in deciding my real estate purchase in recent times.
G**0
Not bad
A good product to buy
A**D
Not very sensitive as claimed
Dunno why. I have a mobile tower next to my home. only 20 feet away from my home. Bu still the RF shows less than 4. Hard to believe. Its not sensitive like it claims, I beliebe.
O**V
😎👍
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! 🙂👍
瑞**穂
重症患者には不向き
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。
N**V
It is a good buy.
Very good instrument and very fast and accurate delivery.
E**2
Para portadores de marcapasos. Funciona
Lo he utilizado únicamente para medir la intensidad/densidad de las ondas electromagnéticas emitidas por una cocina de cuatro placas de inducción (para ver si podía cocinar sin riesgos después de la implantación de un marcapasos). Y el aparato ha sido muy sensible en la medición, diferenciando claramente entre lo emitido por cada una de las cuatro placas, así como mientras me alejaba/acercaba de cada una de ellas. Inconveniente menor: el manual de instrucciones no viene en español/castellano.
C**N
Je le recommande...
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
Trustpilot
2 days ago
1 week ago