EMF Meter,Advanced GQ EMF-390 Multi-Field Electromagnetic Radiation 3-in-1 EMF ELF RF meter, 5G Cell Tower Smart meter Wifi Signal Detector RF up to 10GHz with Data Logger and 2.5Ghz Spectrum Analyzer

This EMF meter is incredibly useful for detecting electromagnetic fields in my home and workplace. The 3-in-1 functionality measures EMF, ELF, and RF radiation with impressive accuracy. The digital display is clear and easy to read with both numerical values and a signal strength bar. The audio alarm feature alerts you when levels exceed safe thresholds. Compact and lightweight design makes it portable for testing different locations. The battery life is excellent. Perfect for identifying sources of EMF exposure around electronics and appliances.

Amazing device and came fully updated. While reading the manual I got a text, this thing detected it, threw a beeping alarm and told me what it was. I was like wth lol and it was 2 feet from the phone at least. So far it tracked down the RF I was getting in my dj equipment. Turned out to be an old school ceiling fan lmao. Also found a wiring issue with the ac lines we didn't know we had. Great device and easy to use. Cash well spent.

I was looking around for a reliable and reasonably priced emf meter and came across this one made in the US. My experience with many China made test equipment is that they do not last long or are not accurate and reliable (you get what you pay for). The beauty of this product is that it can give the readings of the EMF, EF and RF on the same screen with an audible alert if they reach dangerous levels. It can also be switched to dedicated screens to give more details for each type of field. It is nice and compact, the screen is bright and the display readings are clear. I have used this product for over a month now with no issues. I have learnt a couple of things like not to stand less than 2 meters from an operating microwave oven as it will slowly cook you from the inside with dangerous levels of radiation. The wifi router is another thing to look at as it does radiate quite significantly over certain distances. Best to put the wifi router off at night when not in use. Even gang plugs, with the wire rolled into a loop can radiate quite significantly at close range. Also, try not to sleep with the cordless phone or mobile phone too close to your bed. Interesting discoveries made from just purchasing the right tool. I would recommend this product to anyone looking for a good, reliable and reasonably priced product.

I just got my GQ EMF-390 meter and have spent a number of hours playing with it and testing it. I like it, and it's a good meter, but you gotta learn to sweet talk to it. In other words, you have to invest some time in learning how to use it properly. I am in training with the Building Biology Institute to become an Electromagnetic Radiation Specialist. I'm speaking for me, not for them though. But, I mention it because I've spent a lot of time studying EMF meters and EMF measurements lately. That point of view affects how I view these instruments. Consider this an introduction to a review, as I just realized I'm running out of time and have to continue later. So, for the moment, I'll just post some high points. 01) This is a consumer grade instrument, which they say in the FAQ, not professional grade. So, balance your expectations accordingly. However, that doesn't mean it can't be useful to a professional, as well as consumers. 02) The quick start guide is just that. Do read it. But realize that's only the beginning of your journey. Download the full user guide, which is a PDF of many pages, and go through that. At least their documents are written in mostly good English, as opposed to Chinese-English. As a bonus, the quick start guide is in color. 03) Learn how to operate the controls. This may not be obvious at first. Once you're used to them, it will seem much more natural. While the buttons don't have printed labels on them, they do have shapes molded into the plastic, which you can see if you look. Some buttons do different things depending on whether you press and release, or press and hold. If you have the meter facing you, in landscape (wide) mode, and the buttons and model number are on the right: The TOP button, which they call S4, can: check the battery when powered off, power the unit on and off, activate the menu system when powered on, select items in the menu system, and sometimes change things in the menu system. The BOTTOM button, which they call S1, can: back you out of most menus, activate a menu to select the different screens of the device. So, an effective technique to go through menu settings is: press the TOP S4 button to get into the menu, press one of the middle buttons to navigate, press the TOP S4 to select an option, press the middle buttons to change an option, press the TOP S4 button to finalize your answer. Sometimes, pressing S4 will change an answer, so make sure the screen says what you want when you're done. You can then get out of the menu system with the BOTTOM S1 button. You can, if you wish, go back into the menu, and examine each setting without changing it to verify the settings. When not in a menu, the middle S2 and S3 buttons do various things, like allowing you to alter units, switching from EMF (magnetic and electric field) mode, to RF (radio field mode), moving a cursor, zooming in or out, etc. You kind of have to play with these buttons on each screen. Sometimes they do something different if you hold them down. 04) IMPORTANT, learn how to point the meter. Inexpensive meters have sensors which are directional, and they care about how they're oriented in space. This meter has a 3 axis magnetic field sensor, which they label on the screen as EMF. So, you can turn the meter any way you want to read magnetic fields. BUT, the electric field sensor (EF), and the radio field sensor (RF) are directional. If you're pointing the meter the wrong way, you may get wrong readings, or no readings. This is documented on page 5 of the quick start guide, as well as in the PDF. Nevertheless, it bit me and caused me to lose some sleep last night fretting with it. I haven't done much with the EF sensor, but I've been working with RF. This meter may NOT work like you expect, but it will work if you treat it right. My Safe and Sound Pro II meter and my Cornet ED88TPlus will both respond to most RF signals if you are holding the meter in front of you in portrait mode (vertically), with the display facing you, and the RF source, like a cell tower, out in front of you. This meter will NOT respond that way. With this meter, you would be pointing it's sensor up into the sky. Imagine this meter is a small airplane. Place the meter flat on a table with the buttons and label near you and the display face up. The near end with the buttons is the tail. The far end where the propeller of a plane would be (its nose) is the front. The far end, as in edge, of the meter is where the RF sensor is pointing. If there were a cell tower, for example, out in front of your table, you could get a reading on it. In terms of an airplane, pitch means to bring the nose up or down. Yaw means to slide the tail left or right, turning without changing the bank of the wings. And roll means to bank or tilt the wings left or right. Rolling left or right is (sort of) what a race car does going around a sharp turn on a banked track. For lack of better terms to use, this meter CARES about pitch, roll, and yaw. If you pitch the nose of the meter up or down substantially off the line to the source, you will get bad or no readings. If you yaw the meter left or right substantially off the line to the source, you will get bad or no readings. But, that's not all. The meter cares about roll too. All radio waves move outward from the source. But they also have orientation in space. They may be oriented vertically as they move outward. This is called vertical polarization. This usually requires a vertically oriented antenna to receive well. They may be oriented horizontally as they move outward. This is less common and is called horizontal polarization. This usually requires a horizontally oriented antenna to receive well. There are even some sources which are circularly polarized. If you have a cordless phone, you could test your meter with it. At least in the US, almost all cordless phone base stations radiate a strong signal all the time. One you should not stay around. Remember that verbiage on the box that says it will work 900 m away? But you don't sit 900 m away do you? I have decommissioned all my cordless phones. But, they make a great little personal microwave beacon for testing. Just plug in the cordless phone base station to a power source, set it several feet away, and start taking readings. It should put out a continuous signal. On meters with a histogram mode or moving graph mode, like the GQ EMF-390 or the Cornet ED88TPlus, you should see a continuous signal or a continuous string of pulses. You can also test the meter pointing it at a cell tower, etc. So, what this all this means is, assume you have pointed the meter up and down (pitch) to line up with the source, and you have pointed the meter left to right (yaw) to line up with the source, and it's lying flat on the table (or in your hand) with the display up (roll), you STILL may not get a good reading. This was my experience testing with the cordless phone base station. I had to roll the meter 90 degrees, so the display was facing to my left. THEN, I got a strong and consistent reading. You may have to do similar gymnastics with the Cornet ED88TPlus and other meters. This is true with any meter with single axis sensors. This may make the display hard to read because it's facing away from you. The difference between this meter and the Safe and Sound Pro II and the Cornet ED88TPlus is that those measure RF with the display facing you as you might expect, and this one doesn't. That's it for now. I hope to add more later. This should get you started. Forgive any typos as I was in a hurry. Bottom line, this seems to be a good meter if you understand its limitations and treat it properly. If you treat it wrongly, it will give you bad readings in return. Hope it helps. Ron

This meter may be a lifesaver. 2 months ago I had installed a new security camera basestation in a cabinet in our family room where my family spends most of our time. When I got the EMF meter and moved around our house I noticed extremely high and likely hazardous RF (many multiple times that of our WiFi) coming out right by our heads from this camera basestation. I wish I had bought this meter months ago! I changed the default settings on the basestation and was able to confirm with the EMF meter that the levels are now safe. Then I discovered very high EF readings where one of my kids sleeps! Turns out there’s a live wire in the wall by the pillow on the bed, and I was able to fix that situation by unplugging devices from that circuit and confirm using the meter that the issue was solved. I’ve owned this thing for two days and already it’s alerted me to 2 potentially significant health hazards! 5 stars from me and I’m recommending to my friends. Also, the device itself is easy to use and I love how it shows EMF, RF and EF levels separately.

The GQ EMF-390 is much smaller than I expected. I know the dimensions are listed but I didn't pay attention to that. It's only about the size of a large smart phone but thicker like an old school pocket radio. The battery is removable and is a standard 18650 like the ones large box type vape devices use. It comes with a USB cable for charging and computer communication. Also comes with a black draw string pouch for storing your meter and a credit card sized EMF, EF, RF radiation safety reference guide. Some folks say it isn't for beginners but I disagree. This device is self explanatory. You turn it on by holding the power button for 3 seconds. Point it at what you want to test and it displays a numeric reading. If you don't know what the numbers mean it also says normal, medium, high, or extreme. Also the higher the numbers go the faster it beeps. Idiot proof. One reviewer complained that it doesn't detect in 360 degrees. I felt that way at first but now I think front detection is better. This way you better pin point the source of your readings. Another reviewer stated he was not sure his meter was new because his meter arrived with a full charge and the time and date set. Well my meter also arrived fully charged and with correct date and time but it was in a sealed plastic bag and had a protective plastic shield on the screen, the type intended for shipping that you are supposed to remove before use. So I'm guessing they all come charged and set up, ready for action. The shipping was fast!! I received mine 2 days after placing my order with their standard free shipping!

I recently purchased the radio frequency detector, and it has been an outstanding addition to my toolkit. This device is incredibly sensitive and accurate, allowing me to detect and locate various RF signals with ease. The user interface is intuitive, making it simple to operate even for someone who is not a tech expert. The build quality is robust, ensuring durability and reliability in different environments. Whether I'm troubleshooting interference issues or ensuring the security of my communications, this RF detector delivers excellent performance every time. Highly recommended for anyone needing a reliable and efficient RF detection solution!

This is my second EMF meter to replace one that I dropped and the readout stopped working. It is a very good EMF, RF, ELF meter and can show all 3 categories on a single screen. It also has a handy graphing indicator. Overall I am very happy with this purchase. It did help me with the placement of my WIFI NETWORK. It also lets the user know when the received RF is from a device or a nearby cell tower.