Are you trying to find electromagnetic field meters among various brands on the market but aren’t sure where to begin? To assist you in finding the right one, we’ve put together a list of the 7 best to help you pick the perfect one!
We investigated and evaluated a number of the top-selling electromagnetic field meters on the market in order to create our list of the best. Making a decision among the many options available is never simple. There are an infinite number of models available, each with a distinct price. And as you’ll find out, the best options aren’t usually the ones you imagine! This comparison is rich and relevant because of the numerous factors that were employed. You will find products featured in this ranking not only based on their pricing but also on their features and other customers reviews. To write this review, we completed 15 hours of research and did 57 electromagnetic field meters tests. You won’t need to pick products at random any more. If you’re unsure of what to look for, browse our list and consult the buying guide!
An overview of our top picks
Table of contents
The best electromagnetic field meters you can buy today
- Detects all three types of EMF pollution: Magnetic, Electric, and Radio/Microwave Fields
- Displays field signal level, peak level, and a fast indicator bar in the upper left (for RF pulse monitoring)
- Measures 4G and 5G cell phones, cell towers, WiFi routers, Bluetooth, AC Powerlines, and Smart Meters
- Dual Mode: Standard or Weighted Frequency Responses (Weighted emphasizes the effects on the body)
- Manufactured in USA by AlphaLab,Inc; 1-Year Manufacturer Warranty
- ✅EMF Detector Detects All Three Types of EMF Pollution: AC magnetic, AC electric, and RF/microwave
- ✅Auto Sound-light Alarm: Tricolor indicator bar will turn green, yellow, and red; Automatic alarm triggers above the safe value (40V/m or 0.4μT/4mG or 5 mW/㎡). But the Specific frequency information is NOT displayed.
- ✅Illuminated Screen: Designed with an illuminated LCD screen to aid ghost hunting in the dark.
- ✅Operate with one hand and move or make field measurements.(You have to hold the EMF METET to make a test)
- ✅Mute Function: The device can be muted to prevent scaring ghosts away. Or When you’re testing some quiet areas, you can turn off the buzzer first, avoid disturbing the others.
- ✅In addiction , Automatically shut down after 15 minutes without operation.
- ✅What you will get: 1* EMF Reader; 1* 9v Battery; 1*Manual; 1*soft carry bag.
- ✅Provides Worry-Free Returns! If our product doesn't perform well or if any problems arise, please kindly contact customer service.
- 【PRECISE MEASUREMENT】 EMF Meter is an electric field (EF), magnetic field (MF), and radio frequency field (RF) 3-in-1 multifunctional meter. Resolution:RF: 0.01mW/m², EF: 1V/m , MF: 0.1mG/0.1μTRange:RF: 0.01~1800 mW/m², EF: 1~1999V/mMF: 0.1~999.9 mG/0.01~99.99μT.
- 【SCENES TO BE USED】RF function can detect 5G signal and radio frequency up to 10Ghz, EF, and MF functions can measure electromagnetic radiation emitted by household appliances such as TV, induction cooker, rice cooker, refrigerator, computers, wires, etc.
- 【APPLICABLE CROWD】Can be used for ghost hunting, a must-have for anyone interested in paranormal phenomena. As well as office workers, pregnant women and the elderly who need to detect electrical radiation for their health.
- 【MULTIFUNCTION】 Large and back-light LCD is clear for viewing. Auto power off after 15 minutes without operation. Sound and light warnings to remind you of the safe range.
- 【WHAT YOU GET】1 * EMF Meter, 1 * 9v battery, and 1 * User manual，1 *Storage bag. It is equipped with a built-in electromagnetic radiation sensor, which can display the radiation value on an LCD screen after processing by the micro-control chip. You can make reasonable processing or take effective prevention measures toward electromagnetic radiation according to the test result.
- PRECISE MEASUREMENT: Equipped with a built-in electromagnetic radiation sensor, which can display the radiation value on the clear LCD digital display after processing by control micro-chip. Testing magnetic field radiation with optional units mG/µT, the electric field with unit V/m. This emf meter can not test the RF value.
- SOUND-LIGHT ALARM: When the testing result exceeds the value(0.4µT (4mG) or 40V/m), the screen will turn red and the indicator will be flashing, and the buzzer will alarm. If you’re testing some quiet areas, you can close the buzzer first, avoid disturbing the others.
- MULTIFUNCTION: Testing average or peak value(Maximum) reading, and one key hold the data for a view. Large and back-light LCD is clear for viewing. Auto power off after 5 minutes without operation. WIDELY APPLICATIONS: Mainly used for testing TV, computer, printer, microwave oven, refrigerator, cell towers, for low-frequency home appliances, and ghost hunting, etc.
- CUSTOMER SERVICE: ERICKHILL strives to create professional and high-quality meter. We provide a 36-month after-sale service, lifetime technical support. If you have any questions, please feel free to contact us, our professional after-sales team will solve your problem in time.
- 【Accurate Measurement】The EMF meter detector has built-in electromagnetic radiation sensor, which can display the radiation value on a clear LCD digital display by controlling the microchip. Optional units mG/µT for testing magnetic field radiation, V/m for testing electric field.
- 【Sound Light Alarm】When the electric field value exceeds 40V/m, and the magnetic field exceeds 0.4µT or 4mG, the LED screen turns red, the indicator light flashes, and the buzzer alarms. If you find it noisy, you can long press the "AVG/VPP" button to turn off the sound.
- 【Widely Used】EMF meters can measure electromagnetic fields, identify equipment that generates high radiation, and enable you to make decisions about limiting exposure. Mainly testing magnetic and electric fields, such as testing TVs, computers, refrigerators, printers, microwave ovens, cell phone towers, low-frequency appliances, ghost hunting, etc.
- 【Multiple Functions】Short press "AVG/VPP" to switch test average or peak readings, short press "℃/℉" button to switch temperature units °F and °C. Detector will automatically shut down after 5 minutes without operation.
- 【What You Get】: 1 x EMF Radiation Detector + 1 x USB cable + Instruction manual. Feel free to contact us at any time, guaranteed response within 24 hours.
- 【Widely used】Home, office, outdoor, industrial;Mobile phone, computer,TV, refrigerator high voltage line radiation detection;Test the effect of protective equipment such as radiation protective clothing and radiation protective film
- 【3 in 1 EMF meter】One machine for three purposes, simultaneously detecting electric field, magnetic field radiation and temperature.Short press "MODE" key, the electric/magnetic field and ℃/℉ function conversion
- 【Alarm】 Exceeding alarm threshold (electric field: 40V/m; Magnetic field: 0.4μT), the instrument will sound, light, screen display at the same time.【Alarm】 Exceeding alarm threshold (electric field: 40V/m; Magnetic field: 0.4μT), the instrument will sound, light, screen display at the same time
- 【Hold data】The instrument reading will be locked by pressing the HOLD key, and the "H" symbol will be displayed on the screen. If there is no need to lock, press the HOLD key again
- 【Graphic display】LCD graphic display of radiation value trend.Radiation assessment, to remind you whether the current radiation value is safe
- 【MAX/MIN/AVG value】During measurement, press "RANGE" to switch between average value, maximum value and minimum value in turn
- 【Easy to use】Fashion appearance, easy to operate with one hand, easy to move or field measurement
- Measures All Emfs：Olmlmo Emf Meter measures magnetic, electric, and radio frequency radiation, when some other meters did not. If you care about EMF radiation in your home, you need to be able to measure all types of radiation.EMF Meter equipped with a built-in electromagnetic radiation sensor, which can display the radiation value on an LCD screen after processing by the micro-control chip
- User-Friendly & Scenes : Whether you are an expert on EMF radiation ,or you’re just starting out,our meters work well for both.RF function can detect 5G signal and radio frequency up to 10Ghz. EF, and MF functions can measure electromagnetic radiation emitted by household appliances such as TV, induction cooker, rice cooker, refrigerator, computers, wires.RF meters have long been popular because simple to operate but also have the accuracy and functionality that professionals are looking for
- Multifunction :Testing average, peak value, and Maximum reading, and one key hold the data for a view. Large and back-light LCD is clear for viewing. Auto power off after 15 minutes without operation.Black and white two-color display mode. Sound and light warnings to remind you of the safe range.
- Display & Audio : The Olmlmo emf meter provides an enormous amount of information in a way that is simple to find and easy to understand,compairing with any of the other EMF meters on the market.if you’re trying to determine actual EMF radiation levels of certain things, you will want the field indicator, if you are just trying to move around your home and locate EMF radiation sources, the audio is fantastic. Using the audio, you don’t even need to look at the display
- Package List ：1 * EMF Meter, 1 * charging cable, and 1 * User manual; If you have any questions, please contact us, our professional after-sales team will solve your problem in time NOTE: 3-IN-1 EMF METER CANNOT TEST TEMPERATURE, NUCLEAR RADIATION, AND MAGNETISM. (SUPPORTS TESTING OF ELECTRIC OR MAGNETIC FIELDS GENERATED BY THE ELECTRONIC DEVICE ITSELF OR DURING USE. NOT MAGNETISM. SUCH AS MAGNETS)
- The EMF Meter Range for Ghost Hunting helps measure the electromagnetic fields to identify appliances that produce high-level emissions, allowing users to make informed decisions about limiting exposure.
- The detectors have been associated with locations, where unexplained phenomena have been reported like alleged haunting.
- The Ghost Hunting Detector operates on a single battery, and reports EMF measurements in five milliGauss ranges.
- Measure wide spectrum of EMFs from 50 Hz up to 20,000 Hz, and it can register a cell phone that is within 2 feet. Measure EMF level protect from potentially harmful long term overexposure to EMFs.
- Convenient push-on/push-off operation; Portable, easy to use, rugged, reliable, super responsive with easy to read LED light scale in dark and sunshine.
- Metal Detector PRO is an extremely useful application for your android phone
- Application Metal Detector PRO uses built-in magnetometer that can measure electromagnetic field (EMF) level in your surroundings.
- This application detects electromagnetic fields there around your smart phone and tells you if there are metal close.
- Meta Detector app uses built-in magnetic field sensor. Please check in your phone specification if your device is equipped with one.
- The app detect ferromagnetic metals which means that only detects those which generate magnetic fields.
- The metal detector app works also through walls so it can detect hidden electrical wires, studs and metals.
- The magnetic field intensity is presented on a magnetic field intensity chart.
- The magnetic field meter will play sound and vibrate if magnetic field generation object are detected in proximity of the app.
- Please note that the accuracy depends entirely on the magnetic sensor (magnetometer) in your device and might be affected by electromagnetic waves generated by nearby electronic equipment.
- English (Publication Language)
- Measure and Detect EMF Fields: Our EMF Meter is designed specifically for Ghost Hunting, allowing you to accurately measure electromagnetic fields and identify devices emitting high radiation. Make informed decisions about limiting exposure to potentially harmful radiation.
- Easy-to-Read LED Display: The multi-segment LED display ensures easy readability, providing real-time information about the detected EMF levels. This detector is associated with paranormal activity, as unexplained phenomena are often linked to abnormal radiation.
- Portable and Efficient: Powered by a single battery, our Ghost Hunting Detector is highly portable and convenient to use. It reports EMF measurements in the 5 milligauss range, ensuring accurate readings during your investigations.
- Wide Frequency Range: Capable of measuring a variety of EMFs from 50 Hz to 20,000 Hz, our detector can even register mobile phones within a 2-foot range. This comprehensive measurement capability helps prevent long-term overexposure to EMF, which can be potentially harmful.
- US Direct Shipping and Customer Support: Enjoy hassle-free returns within the states! If our product doesn't meet your expectations or if any issues arise, please contact our dedicated customer service team for assistance.
- RADIATION RANGE: Electric field Range of 1V/m-1999V/m and Magnetic field Range of 0.01μT-99.99μT.
- DUAL READINGS: Two readings with backlit LCD screen for easy reading. Measure both magnetic field radiation and electric field radiation with our portable device. The screen has visual clarity with LCD graphic display of radiation value trend.
- ADDED FEATURES: Automatic shutdown after 5mins of no operation, Switchable temperature (°C/°F) and magnetic field unit (μT/mG) with rechargeable lithium battery.
- SOUND LIGHT ALARM: When the test result exceeds the safe value, the instrument will alarm automatically. Stylish appearance, one hand operation and easy to carry for field measurement
- The tester is designed to provide user a quick, reliable and easy way to measure Electromagnetic radiation levels around power lines, home appliances and industrial devices.
- ✔ RF EMF METER AND DETECTOR ALL IN ONE with Calibration Certificate - Reliable meter for measuring RF and LF Radiation from sources such as Cell Phones, Cell Towers, Smart meters, Wifi modems, High Power Lines, Appliances, Electrical Boxes, and Wires.
- ✔ IMPRESSIVE DESIGN, QUALITY, AND ALARM FUNCTION - Large screen and buttons to toggle between RF, Electrical and Gauss Meter modes and alarm function, which makes it easy to operate by both beginner, senior or elderly people and advanced users
- ✔ FREE TECHNICAL SUPPORT PROVIDED FOR EVERY PURCHASE; Phone and Email support via Amazon Messages and User manual guide available for download in this listing
- ✔ MONEY BACK GUARANTEE with 30 days return + 2 YEARS WARRANTY ensures this will quickly become your favorite no-risk purchase. Many people are getting 2 or 3 as a gift for their loved ones. This makes a fine holiday, birthday, anniversary, mother or father’s day gift
- ✔ OUTLINED FEATURES - RF Detector or RF Meter Mode - 50MHz~3.5GHZ; EMF METER or EMF Reader for Electrical Field up to 2000V/M; Gauss EMF Meter 3-axis fields sensor; Manual data memory (Max & AVG) records, Alarm function with ON/ OFF
- Detects All Three Types of EMF Pollution: AC magnetic, AC electric, and RF/microwave
- Auto Sound-light Alarm: Automatic alarm above safe value(40V/m or 0.4μT/4mG or 5 m W/㎡)
- No Guess Working Enjoy Your Life: Have a carry-on EMF Reader, then take no guess working with your home devices.
- Easy to Use Operate: with one hand and move or make field measurements, in addiction, auto shut down after 5 minutes without operation.
- Warranty: All RDINSCOS EMF meter are backed by a full 3-year warranty.
- 💚Versatile Precise Measurements: The EM-101 is a EMF meter for measure electric field strength, radiation power, magnetic field strength, and polarity of static magnetic fields with an effective measurement range of 50MHz-3.5GHz. It also provides a numerical reference for anomalous magnetic field fluctuations in the surrounding area (psychic magnetic fields).
- 💚Easy to Use: The rechargeable EMF device features a TFT 2.0 color screen with a graphical menu for easy and intuitive use. Sound and flash alert can be options, with adjustable alarm thresholds.Electric and magnetic field waveform display modes for better detection of ghost detection trails.
- 💚Portable Design: The electromagnetic radation detector has a protection level of IP3X and is built to last. Its dimensions are 4.64x 2x0.78inch,weighs only 67g, making it easy to carry and use in a variety of settings.
- 💚Widely used:It can detect RF and measure electromagnetic radiation from household appliances. It's ideal for ghost hunting enthusiasts, office workers, pregnant women, and the elderly. Use it to test magnetic and electric fields from sources like cell phone towers and low-frequency appliances to limit exposure to potentially harmful radiation.
- 💚Warm tips:Our product comes with a user manual, charging cable, and portable strap inside the package. If you have any questions or concerns, please contact our customer service team. We will provide professional and thoughtful assistance.
- 🐱👤3-in-1 EMF meter:Its built-in magnetic and electric field sensors, providing accurate data for EF(electric field),RF(radiation power),MF(magnetic field) testing.The combination of dark design and handheld portability makes it even more impressive.
- 🐱👤Ultra-sensitive element upgrade:Audible and red alarms, exceeds the value (28V/m,0.4µT or 40mG), making it easier and more sensitive to capture paranormal phenomena.You can also turn off the alerts yourself if you want a quieter experience.
- 🐱👤Graphic Ripple Display: Sensitive numerical values and ripples are combined with an illuminated LCD screen to make the adventure experience even more exciting!
- 🐱👤WIDELY APPLICATIONS: Mainly used for testing TV, computer, printer, microwave oven, refrigerator, cell towers, for low-frequency home appliances, and ghost hunting, etc.
- 🐱👤Warm tips:We provide a hassle-free return and exchange service, if you have any questions, please contact our customer service team!
- 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.
- Detects 5G network signal and RF up to 10Ghz
- Built-in RF Spectrum analyzer and GQ RF Browser for real time RF monitoring.
- This tool can be used in your home, electric appliance such as computers, hair dryer, cleaner and other devices.
- Flowmeters are used for safety to identify potentially harmful high EMF radiation. This tool can help you to understand the environment fully.
- The small size of this tool is very convenient for everyday use, you can hold to use easily.
- 8+1 LED lights for you to read the testing results and the power in the dark and in the sunlight.
- The special function 8-led indicators represent different radiation values, the green lights mean "normal zone" and "low zone", the yellow lights mean "caution zone", the orange lights mean "high zone" and the red lights means "warning zone".
- MAKE LIFE MORE COMFORT & SAFER - You can’t see, smell, taste, feel or hear electromagnetic fields (EMF) but make no mistake there are they. Selavif EMF Meter is friendly for fresh and advanced users. This meter is super intuitive and simple to use. Just get closer to the electromagnetic radiation source and test. Tip: For the best result, please put close to tested devices.
- HANDY OPERATION & HIGH SENSITIVITY - One-handed operation, easy to move for on-site measurements, effectively identify the signal source and locate the signal position. Although Selavif EMF Detector is compact and light, it is still high sensitivity. Radiation assessment is equipped with a built-in magnetic radiation sensor to display the radiation value on the digital LCD screen after processing by control micro-chip.
- AUTO SOUND-LIGHT ALARM & ONE TOUCH LOCK RADIATION - Selavif EMF Meter is built-in signal strength prompt speaker, and will trigger sound-light alarm when the radiation data exceeds the safe range(Electric field> 40 V/M and Magnetic field> 0.4µT), the detector will flash red and alert the user via an alarm sound automatically. Long press the “BEEP” to turn off the sound. Data retention to lock Max/Average value by one key. It is a good helper to check out whether the place is radiation-free.
- DUAL READINGS IN LOW or NO-LIGHT OPERATION - With large clear LCD screen display, 2 readings could be easily seen even if in dark or sunshine when to turn on the back light function. The EMF Reader screen has visual clarity with large digits and LCD display. Backlight can be easy to turned on and off. Great Tester for Home, School, Office, Outdoor and Ghost Hunting. Measure both magnetic field radiation and electric field radiation at same time clearly and accurately.
- LARGER FREQUENCY RANGE - The measurement frequency range is larger up to 5HZ—3500MHz, obtaining more accurate measurement of daily household appliances: TV, mobile phones, computer, refrigerator, induction cooker, electrical wires, etc. It could be also applied to test the effect of anti-radiation clothing, radiation-proof film and other preventive items. Widely used for researching and general EMF detection like electromagnetic radiation monitoring and test.
- TRIPLE PARAMETER DETECTION: Simultaneously measure RF intensity, electric field intensity, and magnetic field intensity with accurate results.
- LARGE LED DISPLAY: The extra large LED screen provides accurate and visible data for better real time monitoring and recording.
- SOUND ALARM AND RADIATION LEVEL ASSESSMENT: Equipped with a top mounted sound alarm and radiation grading function, it automatically alerts you if radiation levels exceed safe limits.
- PORTABLE DESIGN: Powered by 3 x AAA batteries (not included), this device is portable and convenient to carry to any location you wish to monitor, providing you with a hassle experience.
- WIDE APPLICATION: Suitable for detecting electromagnetic radiation emitted by various industrial equipment and household appliances. Ideal for use in kitchens, high voltage facilities, homes, offices, and factories.
- Widely Used: The EMF meter detector is mainly used for testing TV, computer, microwave oven, cell towers, low-frequency home appliances, etc.
- Accurate Measurement: Equipped with a built-in electromagnetic radiation sensor, users can determine the radiation value of the environment. Optional units mG/µT for testing magnetic field radiation, V/m for testing electric field.
- Sound Light Alarm: Measuring various electromagnetic fields from 4Hz to 3.5GHz. When the electric field value exceeds 40V/m, and the magnetic field exceeds 0.4µT or 4mG, the indicator light turn green and flashes, and the buzzer alarms. Tp avoid disturbing the others, you can close the buzzer first.
- Multifunction: The flashlight makes it easy to use in the dark. Auto power off after 5 minutes without operation.
- Package Includes: 1 x EMF Radiation Detector, 2 x 1.5V AAA Batteries, 1 x Instruction manual.
How to choose a good electromagnetic field meters
Does the idea of finding a fantastic electromagnetic field meters make you anxious? When it comes to purchasing this product, specifically when deciding which model to select, has your head been spinning between options? You are not alone if that is the case. We are aware of the pressure involved in the purchasing process!
Your presence here indicates that you are interested in electromagnetic field meters. Before choosing which product would be the best for your needs after being inundated with information, locate a reliable source with genuine selections. You can get that information from a variety of sources, including buying guides and rating websites, word-of-mouth recommendations from friends and family, online discussion forums where users can share their own experiences, product reviews that can be found all over the internet, and YouTube channels. You can only get the right product through exhaustive analysis. But you realize that’s not always simple. In order to ease your concerns, we have taken the time to develop a list of the top electromagnetic field meters products available right now. You might be wondering how we came up with the list. How was this buying guide developed?
First, we used our algorithms to gather as much reliable data as we could about these products. To verify all the data gathered, we used both artificial intelligence and a lot of algorithms.
Then, our experts used criteria that are recognized in the business to evaluate them according to their quality to price ratio, allowing us to choose the top electromagnetic field meters on the market right now!
The selection of the goods is not arbitrary. Before creating a list, we take into account a number of factors. Below are some of the criteria discussed:
Brand Value: What happens if you choose a dubious brand just because it appears to be a good deal? So the likelihood of receiving a product with a short shelf life increases. That is due to the fact that well-known brands have a reputation to uphold, while others do not. Top electromagnetic field meters brands strive to provide some distinctive traits that set them apart from the competition. So, hopefully one or more of the items on our list will be perfect for you.
Features: Useful features are all you need, not tons of them. We consider the important aspects and select the top electromagnetic field meters based on those.
Specifications: Numbers always help you measure the quality of a product in a quantitative way. We try to find products with higher specifications, but with the right balance.
Quality: A product’s quality may always be quantified with the aid of numbers. We look for goods with better standards that strike the proper balance. The best quality product that gets highly appreciated and recommended by experienced users.
Customer ratings: Would it be accurate to suggest that the electromagnetic field meters were used by hundreds of customers before you? Superior ratings indicate that many customers had better service.
Customer Reviews: Like ratings, provide you with accurate and reliable information about the product from genuine customers. Customer ratings are very important to all of us because they contain accurate and reliable information about the customer service we received from several hundred customers.
Seller Rank: This is very intriguing! Not only do you need a good electromagnetic field meters, you also need a product with rising sales that is trendy. It accomplishes two goals. First, the expanding user base proves the quality of the product. Second, given that number, producers must be able to offer greater quality and after-sales support.
Value: You get what you pay for, they say, so consider the value. Cheap isn’t always good and expensive isn’t always bad. However, that does not imply that spending a lot of money on a product that is flashy but underwhelming is a good idea. Before adding them to the list, we make an effort to evaluate how much value you can get for your money from your electromagnetic field meters.
Durability: Durability and reliability are closely related concepts. You will benefit from a strong and long-lasting electromagnetic field meters for months and years to come.
Product availability: Products come and go, and new ones replace the old ones. Most likely, a few new features and required changes were made. What use is it to use a supposedly good product if the maker no longer supports it? We make an effort to highlight products that are current and offered by one or more trustworthy sellers, if not more.
Negative Reviews: Yes, we do take that into account as well! The goods with the majority of bad reviews are filtered out and disregarded when we choose the best-rated one on the market.
These are the standards by which we selected our electromagnetic field meters. Do we end our process there? Hell no. The most crucial fact about us that you should be aware of is that we regularly update our website with current and pertinent information. We have one more layer of filtration since we place the greatest importance on reader satisfaction. Please let us know if any product included here is incorrect, irrelevant, subpar, or simply out of date. We always value your opinions, and we’ll work hard to make any necessary corrections to our list in response to them.
Why should you believe us?
There are now thousands of possibilities for these products on Amazon, but choosing the best one can be difficult and time-consuming. And what electromagnetic field meters should you purchase in 2022?
This guide is the result of more than 10 years of experience in researching, testing and writing about many topics. Each member of our team is an authority in their area. We read every article we could find online and every consumer review on every retail website for seven hours. Additionally, we discovered a ton of websites that offered helpful resources, including buying tips and thorough information on electromagnetic field meters.
