13 best magnetic field detectors

Magnetic field detectors, also known as magnetic field sensors or magnetometers, are electronic devices used to measure and detect changes in the magnetic field in their vicinity. They find applications in various fields, including electronics, security, geophysics, and more. Here is some information about magnetic field detectors:

  1. Principle of Operation: Magnetic field detectors work based on the principle of detecting changes in the strength and direction of magnetic fields. They typically utilize one of several technologies, such as Hall effect sensors, fluxgate sensors, or magnetoresistive sensors, to measure magnetic field intensity.

  2. Applications:

    • Security and Surveillance: Magnetic field detectors can be used in security systems to detect the presence of hidden magnets or magnetic devices. This is especially relevant for counter-surveillance efforts.
    • Navigation: Some magnetic field detectors are used in navigation systems, such as electronic compasses in smartphones and GPS devices, to determine the orientation of the device with respect to the Earth's magnetic field.
    • Geophysics: In geophysical surveys, magnetometers are employed to measure variations in the Earth's magnetic field, helping in the detection of subsurface anomalies like buried objects or mineral deposits.
    • Electronics: Magnetic field sensors are used in electronics for various purposes, including proximity sensing, current measurement, and position detection in industrial machinery.
  3. Types of Magnetic Field Detectors:

    • Hall Effect Sensors: These sensors rely on the Hall effect, which causes a voltage difference across a conductor when subjected to a magnetic field. They are commonly used in electronic devices for proximity sensing and current measurement.
    • Fluxgate Sensors: Fluxgate magnetometers use a magnetic core that becomes magnetized in response to an external magnetic field. Changes in the core's magnetization are measured to determine the surrounding magnetic field strength.
    • Magnetoresistive Sensors: These sensors detect changes in electrical resistance caused by the presence of a magnetic field. They are sensitive and used in various applications.
  4. Accuracy and Sensitivity: The accuracy and sensitivity of magnetic field detectors can vary depending on their design and intended use. High-precision magnetometers are used in scientific research and navigation, while less precise sensors are employed in everyday applications.

  5. Calibration: Magnetic field detectors often require calibration to ensure accurate measurements. Calibration is done to compensate for any offsets or drift in the sensor's readings over time.

  6. Limitations: Magnetic field detectors may be affected by nearby magnetic sources, such as electronic equipment, magnets, or ferrous materials.Interference from these sources can impact the accuracy of measurements.

In summary, magnetic field detectors are electronic devices used to measure changes in magnetic field strength and direction. They have diverse applications, including security, navigation, geophysics, and electronics, and come in various types, each suited to specific use cases. Calibration and minimizing interference from external magnetic sources are essential considerations when using these detectors.

Below you can find our editor's choice of the best magnetic field detectors on the market
  

KKmoon EMF Meter, Portable Handheld Digital LCD Electromagnetic Radiation Tester Electric Field Magnetic Field Dosimeter Detector with Sound and Light Alarm (5Hz-3500MHz)

KKmoon

Based on 23 reviews Check latest price

Product description

◕‿◕This detector can test electric field radiation and magnetic field emission to reach the optimal test result. It's widely used to test and learn electromagnetic radiation situation indoor and outdoor.



◕‿◕Features:

One detector with two uses, it can test the electric field and the magnetic field radiation at the same time.When the test result exceeds the safe value, the instrument will alarm automatically.

Radiation assessment can remind you whether the radiation value is safe.

Electromagnetic radiation monitoring: household and appartment, office, outdoor and industrial site.

Electromagnetic radiation test: mobile phone, computer, TV set, refrigerator and high voltage cable radiation test.Radiation protection product test: test effects of radiation-proof clothes, radiation-proof film and other prevention articles.

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.



◕‿◕Specifications:

Material: ABS

Color: black

Power supply: 3 * 1.5V AAA battery (not included)

Precision:

Electric field: 1 V/m

Magnetic field: 0.01μT

Range:

Electric field: 1-1999V/m

Magnetic field: 0.01μT -99.99μT

Reading display: 3-1/2-digit LCD

Alarm threshold value:

Electric field: 40V/m

Magnetic field: 0.4μT

Testing bandwidth: 5Hz-3500MHz

Sampling time: about 0.4 seconds

Test mode: bimodule synchronous test

Operating temperature: 0~50℃ / 30℉~122℉

Operating humidity: relative humidity < 80%

Item size: 135 * 60 * 27mm / 5.3 * 2.4 * 1.1in

Item weight: 107g / 3.8ounce

Package size: 165 * 77 * 30mm / 6.5 * 3.0 * 1.2in

Package weight: 147g / 5.2ounce



◕‿◕Package list:

1 * Electromagnetic Radiation Tester

1 * User Manual

  • ◕‿◕One detector with two uses, it can test the electric field and the magnetic field radiation at the same time.When the test result exceeds the safe value, the instrument will alarm automatically.
  • ◕‿◕Data hold and clear LCD display, one-key can lock the radiation value and easily read the value.Radiation assessment can remind you whether the radiation value is safe.
  • ◕‿◕Easy to use and operate, easy to move or for on-site measurements.Electromagnetic radiation monitoring: household and appartment, office, outdoor and industrial site.
  • ◕‿◕Electromagnetic radiation test: mobile phone, computer, TV set, refrigerator and high voltage cable radiation test.Radiation protection product test: test effects of radiation-proof clothes, radiation-proof film and other prevention articles.
  • ◕‿◕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.

Product features

Feature

One instrument with two uses, it can test the electric field and the magnetic field radiation at the same time.

Sound-light alarm, when the test result exceeds the safe value, the instrument will alarm automatically.

Data locking, one-key lock of the radiation value and easily read the value.

Measure the Environment Temperature - with 2 temperature units (℃ and ℉).

Radiation assessment, remind you whether the radiation value is safe or not.

Fashionable design, easy on-hand operation, it's easy to carry and make field measurement.

Magnetism Detector

Magnetic Analysis Corporation

Based on 30 reviews Check latest price

Product description

The Magnetic Analysis Magnetism Detector is widely used by steel suppliers and fabricators to indicate the degree and polarity of residual magnetism in ferrous products. THIS UNIT IS NOT INTENDED TO MEASURE THE STRENGTH OF RESIDUAL FIELDS, NOT MAGNETS. ATTEMPTING TO MEASURE FIELDS SIGNIFICANTLY STRONGER THAN 20 GAUSS MAY DAMAGE THE UNIT. Easy to use, simply place the base of the indicating needle against the object you are testing. The needle indicator will move to a point on the scale that represents the strength of the magnetic field of the material (in gauss). The meter scale reads 20 units on either side of a zero center point, allowing for quick identification of the field’s polarity as well as the level of the magnetic field. Full scale deflection is equal to approximately twenty gauss. When checking magnetized bar stock or tubing, a reading of 10 or less is usually acceptable. Each piece should be tested separately, so that the reading is not affected by adjacent parts. Sensitivity & Calibration Magnetism Detectors are calibrated prior to shipment, as signified by the sticker applied and initialed by a member of MAC’s Quality Control staff. Calibration to a Level of +/- 1 gauss at 10 gauss is performed utilizing a calibration fixture, calibrated with a gaussmeter which has been calibrated in accord with standards traceable to the N.I.S.T. For those applications where the sensitivity of the instrument, as supplied, is of high significance, the full-scale reading (+/- 20) is obtained when the meter is subjected to a field whose known intensity is 20 gauss plus or minus 10%.

  • RESIDUAL MAGNETISM ONLY, NOT INTENDED TO MEASURE STRENGTH OF MAGNETS,Inexpensive, Pocket Size, Light in Weight, Ruggedly constructed
  • Instruction Sheet Downloadable Above

User questions & answers

Question: do you offer meters with a higher gauss range
Answer: The triceps and biceps workout includes abs, so you might want a mat for that part. Other exercises where you might use a mat (pushups and planks, prone chest press and chest fly) are done either without a mat or on a step bench.
Question: Buenos días viene con certificado de calibración vigente
Answer: The step you see on the DVD cover for Slow & Heavy is only used as an exercise bench in all of the workouts. It's never used as a step to do step aerobics. It's mainly used for exercises like dumbbell chest flys and dumbbell bench presses or to just sit on to do seated dumbbell exercises.

CMS Magnetics Magnetic Pole Detector, a Handy Polarity Identifier to Know Magnet's North or South Poles, Great for School Teachers, Science Projects and Metal Detector

CMS Magnetics

Based on 250 reviews Check latest price

Product description

This magnetic pole detector is a great low-cost tool to view and identify the polarity of magnets, or to find out if an object is magnetic. It's simple yet durable construction means that this detector makes a great educational tool for teaching students about the properties of magnets and their magnetic fields.



This magnetic pole detector consists of a bar magnet with its north pole painted red and its south pole painted blue. When held up to the south pole of a magnet, the red end of the indicator will be pointing toward the magnet.

  • Ultra-low friction magnet holder means that this magnetic pole detector can detect magnetic fields from over a foot away
  • Easily detect and identify where the poles on a magnet are in order to safely handle them.
  • Great for educators - Teach kids what poles on a magnet are and how they interact with each other.

User questions & answers

Question: Will this device reliably tell me the field orientation of brushless motor magnets
Answer: I used 8, 10 and 15 pound weights. You can use heavier (Cathe uses some 20 and 25 pound weights). Whatever you're comfortable with.
Question: Is red north on this magnet? So when you test a magnet and the red side points towards it, that would be the south side of the magnet
Answer: Different sets of dumbbells, a step bench, a mat, gloves (not required but helpful)

5 LED EMF Meter Magnetic Field Detector Ghost Hunting Paranormal Equipment Tester Counter

kydely

Based on 390 reviews Check latest price

Product description

Specifications:

EMF Meter Magnetic Field Detector Ghost Hunting

Paranormal Equipment



Color: Black,Grey

Material: ABS

Accuracy: +/- 5%

Size: 14.3cm x 5.2cm x 2.5cm (L*W*H)

Detection Range: 0 to 20+ milliGauss

Detection Frequency: 30 - 20,000 Hz

Battery: 1x 9V batteries required (not included)



The Five Scales:

The 1st Light detects a Normal EMF field, what is

always around us.The range is between 0 to 1.5 mG

The 2nd Light (GREEN) detects a Low Level EMF,

which range is between 1.5 to 2.5 mG.

The 3rd Light (YELLOW) detects a Mid Level EMF

in the range between 2.5 to 10 mG.

The 4th Light (ORANGE) detects a High Level EMF

field in the range between 10 to 20 mG

The 5th Light (RED) detects an Extremely High EMF

Range of 20+ mG



Package Included:

1 x EMF Magnetic Field Detector (Battery is not included)

  • The range of EMF meters used for ghost hunting helps to measure electromagnetic fields to identify devices that generate high radiation, enabling users to make decisions about limiting exposure.
  • Easy-to-read multi-segment LED display. The detector is associated with the location and it is reported that the unexplained phenomenon is related to radiation.
  • The Ghost Hunting Detector operates on a single battery and reports EMF measurements in the 5 milligauss range.
  • Measuring a variety of EMFs from 50 Hz to 20,000 Hz, it can register mobile phones within 2 feet. EMF levels are measured to prevent potentially harmful long-term overexposure to EMF.
  • 👍JINYI Lifetime warranty for this item against manufacturer defect! Order from JINYI for a true worry-free shopping experience! To ensure that you can buy genuine products, please choose JINYI!

User questions & answers

Question: is it push on/push off or do you have to hold the power button down to use
Answer: Both are correct. Yes, you have to hold the power button to use it and it is a push on/push off.
Question: Where is this item made
Answer: Sorry that happened. We purchased the same item and it is marked made in Camillus NY and seems to be working fine. Sounds like knockoff product was sent.
Question: so, has anyone found a ghost with this
Answer: Ghosts or spirits are made up of energy. Therefore, the EMF Detector senses when there is electromagnetic charges around you. Yes, it detects ghosts and yes, I have used the KII and detected ghosts.👍🏻
Question: Does this emf meter stay on without having to use something to hold the button down
Answer: It has a button that you push until it clicks to turn on. You push the same but until it clicks and then it will turn off

Jahyshow LED EMF Meter Magnetic Field Detector Ghost Hunting Paranormal Equipment Tester Portable Counter

Jahyshow

Based on 164 reviews Check latest price
  • ✅ The range of EMF meters used for ghost hunting helps to measure electromagnetic fields to identify devices that generate high radiation, enabling users to make decisions about limiting exposure.
  • ✅ Easy-to-read multi-segment LED display. The detector is associated with the location and it is reported that the unexplained phenomenon is related to radiation.
  • ✅ The Ghost Hunting Detector operates on a single battery and reports EMF measurements in the 5 milligauss range.
  • ✅ Measuring a variety of EMFs from 50 Hz to 20,000 Hz, it can register mobile phones within 2 feet. EMF levels are measured to prevent potentially harmful long-term overexposure to EMF.
  • ✅ US DIRECT SHIPPING: Provides carefree return within the states! If our product doesn't work well or exist any problem.Please kindly contact customer service.

User questions & answers

Question: Where is this made ???? Looks like a copy
Answer: It says its made in the US.

Product features

Features:

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.

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 wide spectrum of EMFs from 50 Hz up to 20,000 Hz, and it can register a cell phone that is within 2 feet.

Cambridge Labs Rechargeable EMF Meter, Radiation Detector, Electromagnetic Field Tester, Smart Counter, Great Reader for The Home, Office Or Ghost Hunting, Handheld Digital Sensor, Black

Based on 417 reviews Check latest price

Product description

Measure EMF (Electromagnetic Field Radiation) with this simple yet powerful EMF reader. It is lightweight, portable, and handheld. Find out the safety of the EMF waves in your environment. This EMF detector is sensitive to low frequencies and helps to determine the amount of radiation in a space.

  • Dual readings - Two readings on an easy to see backlit LCD screen. Measure both magnetic field radiation and electric field radiation with our portable device. The screen has visual clarity with large digits and data up to three decimal points
  • Precise and accurate – The Cambridge Labs meter comes with precision data that alerts users when the EMF field measures high
  • Rechargeable and portable – Our handheld EMF reader is available in three colors: black, red, and white and is packed with a USB cable to charge it
  • Easy to use - for both beginners and advanced users to help detect safe environments
  • Satisfaction guaranteed - We stand behind our product. You can return the item for free within the first 30 days, no questions asked. Our Customer Service team is here for you and happy to help answer and questions you may have

User questions & answers

Question: What is the frequency range of this device
Answer: Hello Rafael, Thanks for reaching out to us! Frequency range is 50hz to 3000Mhz. Please let us know if there's any other way we can help. Kind regards, Sherrylyn Customer Service, American Lifetime
Question: how many does this come with
Answer: One, and its very entry level. I would recommend a trifield meter or something more advanced instead.
Question: Hello, is it work for detecting smart meter radiation level
Answer: Yes, it should detect a magnetic field similar to WiFi. It will only detect the smart meters electrical field when close by. Word of advice, if you buy this meter do not power on the unit close by what may be putting off these fields. Instead, power on the detector further from any other signals then walk towards what you want to measure.
Question: Is this also an rf device or strictly an emf device? my understanding is emf is electrical and rf is radio frequency like wireless
Answer: While this is a great way to count the emf power. Some of who are interested in radio have been using an alternate solution for the last 60 years. Simply tune a portable AM radio to an unused. quiet spot on the dial. Turn the volume up, then walk around your home or plant and "listen" to the EMF. Use the radio like a Geiger counter to point toward the offenders. You can actually hear the differences, and rate intensity by the loudness of the sound. Interestingly, some will have a buzz, some while whine, some will pulse, some will gurgle. Some will radiate a foot or less, some will radiate 6 feet or more. Interesting to listen to the difference between a wireless phone charging pad when the phone is on and then off the pad. The same can be done in your car, with the radio tuned to a quiet "AM" spot as you drive past power transformers, overhead high tension power lines and etc. During electrical storms, you can pick up lightning from more than 100 miles away as a sharp "crackle". If lighting is closer, count the seconds from the "crackle" until you hear the boom to calculate the distance in miles. Still a device like the Cambridge Labs EMF meter are very useful, but there are interesting ways to compliment it or even without it by using portable AM radios. Some of us have been using this AM system for many years to route out interference to our shortwave radios and etc since the late 1950's!

SOEKS EcoVisor F4 Geiger Counter Radiation Detector Dosimeter Nitrate Tester EMF Electromagnetic Electric Magnetic Field Device Water Quality TDS Meter Portable Electronic Touch Screen Easy to Use

Based on 105 reviews Check latest price
  • Geiger Counter radiation detector and Dosimeter instantly alerts about all types of ionizing radiation in food, air, water, objects, environment and keeps track of the radiation dose
  • Food Nitrate Tester checks your favorite fruits, vegetables and meats for the excess amount of nitrates, using Patented Multi Point Probe with Temperature Compensation
  • EMF Meter tests your house, environment, electronic devices and appliances for the harmful spectrum of Electric and Magnetic Fields (EMF's)
  • Water Tester helps to drink clean water knowing the number of particles in the water besides water, so you know when it's time to replace those filters
  • Tested and Certified by ROSATOM, RosTEST, CE, EAC, ISO:9001. Patented Technology by SOEKS

User questions & answers

Question: what PPM nitrates levels does it test
Answer: I believe it would. I have a leather cover on my iPad Pro and I don't have to take it off in order for it to fit into the stand. I would assume the same would hold true for the slim combo case.
Question: Does this product still have very poor battery life
Answer: You would have to remove the Otterbox. Definitely.
Question: What units of radiation does this read out in
Answer: Thank you for your valuable question. Logitech says: BASE passes only electrical current through the Smart Connector. However, while your iPad is on the BASE, you can use the standard lightning connector to sync data with your iTunes.
Question: Will it test for radiation in the air and ground
Answer: NO Not "New" as of 2018. Apple moved the connector on the iPad 11" and 12.9" iPad starting in 2018, so ALL iPad Pros purchased new after 2018 WILL NOT WORK with this device. I bought it. The connectors don't line up. Can't make it work in any way. DO NOT BUY if you have a 2018 or later iPad Pro.

Product features

ACCURATELY DETECT EMF’S WITH A SINGLE BUTTON!

Did you know that low-level non-ionized electromagnetic fields emitted by everyday electronic and electric devices might have a negative effect on your health? Studies have shown that pregnant women, children and seniors can be affected by EMFs. However detecting EMF levels has not been easy. Until NOW!

With the SOEKS portable digital EMF tester, you can detect EMF levels in your home, workplace or any other space in just seconds. Simply use the touch screen and button controls to choose the test you want to run and effectively keep track of your home’s EMF levels in just a few seconds.

Test smart meters, power lines, routers, cell phones, monitors, household appliances and more!

And the best part? You can easily operate our user-friendly personal high-accuracy EMF meter even if you don’t have any special knowledge!

PRO TIP: EMF NORMS for INDOOR, OUTDOOR and ELECTRONICS are already programmed into the memory of the device, and all measurements are taken instantly (within 1 second)!

IS YOUR HOME OR WORKPLACE RADIATION-FREE? THE ANSWER MAY SURPRISE YOU! ACCURATE AND RELIABLE READINGS WITH THE NUCLEAR STANDARD GEIGER MULLER TUBE SBM 20-1

Radiation has been considered a silent killer for decades, since it can cause serious and often fatal diseases. However, detecting radiation levels and radiation dose is not easy, since you need a military-grade Geiger Muller radiation sensor that is not only accurate but also big enough to detect even the tiniest trace of radiation.

Now you can effectively detect radiation levels with the SOEKS USA exclusive radiation dosimeter, which features a military-grade Geiger Muller tube, which is made in Europe and is BIGGER than most other radiation detectors.

As a result, you will be able to accurately measure radiation levels with your Geiger counter in your home, workplace or other spaces and make sure that your loved ones are safe from potentially deadly radiation.

PRO TIP: You don’t have to be in Chernobyl to have high radiation levels in your home. Various sources may emit radiation that might be harmful for your family. It's improtant to TEST! Our detectors do NOT emit ANY radiation!

MAKE SURE YOUR FAMILY’S FOOD IS HEALTHY & SAFE! HIGHLY ACCURATE MULTI-POINT MEASUREMENT WITH AUTOMATIC TEMPERATURE COMPENSATION. NO NEED TO WAIT!

Did you know that Nitrates are more dangerous than pesticides? Did you know that chemical fertilizers that speed up growth are the reason your favorite foods have Nitrates?

SOEKS pro food Nitrate detector is finally here to help you easily test all your favorite fruits and vegetables and avoid eating Nitrate-filled products.

The patented Nitrate Testing Technology combined with the advanced and accurate Nitrate testing probe (only Ecoviosr F4 features multiple contact points and auto temperature compensation) will allow you to easily avoid meat, vegetables, fruits that contain harmful Nitrates.

As a result, you will be able to improve your diet, protect your children from being exposed to harmful compounds and make sure that you and your loved ones enjoy HEALTHY, SAFE & LOW-NITRATE foods every single day!

PRO TIP: A safe Nitrate dose for adults is 200-300 mg per day, count it! Simply insert the probe and the portable tester will give you ultra-accurate results in just 3 seconds!

HARD OR SOFT? LOW OR HIGH TDS IMPURITIES? TEST YOUR WATER AND FIND OUT IN JUST 3 SECONDS!

Now that you have made sure that your food is safe, it’s time to focus on your family’s water. Did you know that your water may be filled with TDS (Total Dissolved Solids) that may cause serious health issues in the long run?

The SOEKS EcoVisor F4 digital water quality tester will help you accurately detect your water’s TDS levels in just 3 seconds. Then you can find an effective solution, by installing water filters that will keep your water clean. But knowing is the first step toward solving.

Our advanced portable water quality testing device will allow you to keep track of your water’s TDS levels even after you install your water filter, in order to help you protect yourself and your family from contaminated water.

PRO TIP: The ultra-sensitive testing probe can be used to test the water quality in your home, office, beach house, garden, farm, restaurant, bar or anywhere else you like.

SOEKS ECOVISOR F4 - THE ULTIMATE PROTECTION FOR YOUR FAMILY

Providing Superb Radiation Sensitivity, Highly Accurate Nitrate Tester, Easy to Use EMF Meter and Water Quality Testing. All-in-One Portable Device - SOEKS EcoVisor F4

WHAT MAKES THE SOEKS ECOVISOR F4 DIGITAL TESTER A MUST-HAVE FOR EVERY FAMILY?

Our portable digital tester is designed, developed and manufactured in Europe, under strict guidelines, using only the highest-quality parts, in order to help you keep track of your food’s Nitrate levels, Radiation and home’s EMFs levels without any hassle. Unlike all those cheaply-made testers that are made in China using flimsy parts, the SOEKS USA exclusive portable tester is:

  • EASY TO USE – the ergonomic size, convenient touch screen, and simple instructions will allow everyone – even seniors – to easily use the radiation tester and read the results. You can easily carry it in your bag and take it with you to the grocery store.
  • ULTRA ACCURATE – we have used the highly accurate Nitrate testing probe (with multiple points of contact and automatic temperature compensation) in order to offer you ultra-accurate results that will help protect you and your family.
  • LIFE SAVING – when it comes to your family’s safety, TEST, don’t guess. Keeping track of your house’s radiation and EMF levels, avoiding foods that are filled with Nitrates and testing your water quality are vital steps if you want to keep your family safe.

WHAT'S IN THE BOX:

  • SOEKS ECOVISOR F4 x 1
  • AAA Rechargeable BATTERIES (installed in the device) x 2
  • USB Charger (US VERSION) x 1
  • USB to Micro-USB Charging Cable x 1
  • User Manual (English) x 1
  • Stamped Certificate with Serial Number x 1

Instead of settling for all those low-quality Chinese knock-offs, you can finally gain access to a military-grade, advanced and user-friendly digital Nitrate food detector that will allow you to REGAIN YOUR LOST CONFIDENCE, KEEP YOUR CHILDREN SAFE and SUPPORT YOUR HEALTH!

EMF Meter Meterk Electromagnetic Radiation Detector Digital LCD backlight for Testing Ghost, Magnetic Field, Electric Field Radiation and Ambient Temperature, Sound-Light Alarm, Max/Average value Lock

Based on 1 reviews Check latest price
  • display "E 2.0" is the detector version which does not influence the detection value.
  • ★【Upgraded Version!】One EMF meter with two uses, this EMF meter can test electric field strength and magnetic field strength at the same time to reach the optimal test result.
  • ★【 Environment Temperature Detection】with 2 temperature units (℃ and ℉). Large & Clear LCD display of the values for easy reading.
  • ★【Intensity Bar Graph Display】Putting the Meterk EMF meter close to a test environment with a magnetic or electric field, it displays a bar graph of the intensity of the electric and magnetic fields, respectively, and a GOOD/BAD prompt for the test environment on the screen.
  • ★【Sound-Light Alarm 】When the test result exceeds the safe value that you have setted up, the instrument will alarm automatically. It's widely used to test and learn electromagnetic radiation situation indoor and outdoor. Suitable to measure the electromagnetic generated machine, measure low-frequency appliance and high-frequency radiation appliance.
  • ★【Multi-purpose Measurement】Suitable for mobile phone, TV, induction cooker, rice cooker, refrigerator, computer, appliances, electrical wires, etc. 30-days money back guarantee, 24 months warranty and lifetime technical consulting service support.

User questions & answers

Question: Does this meter work on smart meters? Is this meter made in China
Answer: Yes, it is made in China. Most all the meters at this low price are. Yes, I believe it will read a smart meter. I read my WiFi router, lap tops, & cell phones with it. The best meters however cost well over $500.00
Question: Will this test smart meters on my home? i covered mine & want to see if that helped ... also will it test wi-fi ...modems? cell phones etc
Answer: If you're wanting to see the strength of either the Electric Field, or Magnetic Field Radiation of something. It will do so. Everything from a banana, to all the items inside the Globex Corp. If you're wanting to see the strength of either the Electric Field, or Magnetic Field Radiation of something. It will do so.
Question: Is this good fo testing cell towers
Answer: Hello, Meterk EMF Meter, in order to better solve your problem, I consulted the relevant technical department. The answer is: This product can test the cell phone tower, but the cell phone tower is a high frequency. The data tested is not very accurate and can only be used as a reference. If you have any other questions, please contact us.
Question: What is the bandwidth
Answer: Magnetic field frequency range - 20Hz-300Hz Electric field frequency range - 20Hz-3500MHz

Product features

Meterk Upgraded Version

  • Meterk EMF meter is an instrument that can detect the electric field strength and magnetic field strength, also can measure the environmental temperature. It is very small, can be hand carry for the outdoor test, and high sensitivity. Can set up the alarm level for electric field and magnetic field test, alarm with light and sound.

New EMF Meter - Advantage

  1. All three major kinds of EMFs (magnetic fields, electric fields, and radio/microwaves fields) can be detected with this meter.
  2. Detects a wide range of frequencies, including those from TV, computers, microwave ovens, rice cooker, refrigerator, electric alarm clocks, and fluorescent light, etc.
  3. Display the strength bars of electric and magnetic fields and a GOOD/BAD prompt for the test environment.

Upgraded Features

LED EMF Meter Magnetic Field Detector Ghost Hunting Paranormal Equipment Tester Portable Counter (Black, 1 PC)

Gupgi

Based on 207 reviews Check latest price

Product features

Specification:

---Color: black, gray

---Material: ABS

---Accuracy: +/- 5%

---Dimensions: 14.3cm x 5.2cm x 2.5cm (L *W * H)

---Detection range: 0 to 200,000 gallons

---Detection frequency: 30-20,000 Hz

---Battery: 1 9V battery (not included)---

Five scales:

---The first light shows a normal EMFfield, what is

---Range is 0 to 1.5 mG

---The second light (GREEN) detectslow-level EMF,

---The range is 1.5 to 2.5 mG.

---The third light (YELLOW) can detectintermediate EMF

---The distance between 2.5 and 10 mg.

---The fourth light (orange) can detectadvanced EMF

---Range between 10 and 20 mG

---Fifth lamp (RED) shows extremely highEMF

20+ mG range

packing list:

---1 x EMF magnetic field detector(without battery)

AceFox LED EMF Meter Magnetic Field Detector Ghost Hunting Paranormal Equipment Tool

AceFox

Based on 15 reviews Check latest price

Product description

Product description



EMF Meter Magnetic Field Detector Ghost Hunting Paranormal Equipment

Details:



Color: Black

Material: ABS

Accuracy: +/- 5%

Size: 14.3cm x 5.2cm x 2.5cm (L*W*H)

Detection Range: 0 to 20+ milliGauss

Detection Frequency: 30 - 20,000 Hz

Battery: 1x 9V batteries required (not included)



Features:

-Easy-to-read multi-segment LED display.

-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.



The Five Scales:

The 1st Light detects a Normal EMF field, what is always around us.The range is between 0 to 1.5 mG

The 2nd Light (GREEN) detects a Low Level EMF,which range is between 1.5 to 2.5 mG.

The 3rd Light (YELLOW) detects a Mid Level EMF in the range between 2.5 to 10 mG.

The 4th Light (ORANGE) detects a High Level EMF field in the range between 10 to 20 mG

The 5th Light (RED) detects an Extremely High EMF Range of 20+ mG

  • Size: 14.3cm x 5.2cm x 2.5cm (L*W*H)
  • Color: Black
  • Material: ABS
  • Easy-to-read multi-segment LED display.
  • Detection Range: 0 to 20+ milliGauss. Detection Frequency: 30 - 20,000 Hz

Hidden Camera Detectors,Anti Spy RF Detector Wireless Bug Finder GPS Tracker GSM Listening Device, Laser Lens Magnetic Field Detectors with 3 Detection Modes

Based on 28 reviews Check latest price
  • 【HIDDEN CAMERA Detector With MULTIPLE FUNCTIONS】 this is a 3 in 1 detector that helps to find hidden wireless and wired camera, unwanted GPS tracker. 3 detection modes for your choice include RF SIGNAL DETECTION for locating GPS tracker mounted onto vehicle, MAGNETIC FIELD DETECTION for detecting magnet and HIDDEN CAMERA DETECTION for searching hidden monitoring and listening device.
  • 【RADIATION WARNING】 The wireless detector can detect whether there is intensive radio signals radiation around the living and working environments, whether there is strong electromagnetic radiation leaking from the household appliances that do harm to health. such as refrigerators, computers, or suspicious wireless signals.
  • 【EASY to USE & CARRY】The design of the product is humanized, so you can control it easily via two keys. The scanner alerts you with indicator light, vibration or beep when the suspicious RF wireless signal or magnetic field signal is detected. The special laser lens and LED laser lamp will help you scan the invisible wired or wireless camera.It’s lightweight, portable, and easy to carry out.
  • 【WIDELY USED】 It can be used in offices, important business negotiations, confidential meetings, houses, bathrooms, cars, hotels, locker rooms, etc, to protect privacy.
  • 【LIFETIME TECHNICAL SUPPORT】: If you encounter any problems during the operation, you can contact us directly. We have a professional technical team, 7 * 24H to solve any problems for you.

Product features

Product Details

Receive frequency range: 1MHz-8000MHz

Detect dynamic range: >73dB

Detection sensitivity: ≤0.03mV

Power:3.7V 1000mA lithium polymer battery Working current: 60-110mA

Laser Scanning

The special laser lens and LED laser lamp will help you find the invisible wired or wireless camera, including hidden camera, spy camera, wifi camera, pinhole camera, ip camera, etc.

Magnetic Field Signal Detect

In magnetic field detection mode, it's able to detect magnetic suction positioner and bug, standby magnetic locator and GPS tracker with magnetic field probe.

RF Wireless Signal Detect

In RF wireless detection mode, with antenna it can detect wireless surveillance cameras, tracking device and electrical sources. Also SIM card (2G, 3G, 4G) bugs, GSM eavesdropping device.

High Speed Security Chip

Hoeujia detector uses high speed security chip, which provides high computation speed and security protection. It equips the detector with strong mind.

Multiple Identification Alarm

The scanner alerts you with indicator light, vibration or beep when the suspicious RF wireless signal or magnetic field signal is detected. You can select proper alarm as the case.

Long Working Time

Lithium polymer batteries is included. One charge offers you about 4-5 hours continuous working time, up to 5 days standby time .It protects you longer to meet your requirements.

Electric Field, Radio Frequency (RF) Field, Magnetic Field Strength Meter by Trifield – EMF Meter Model TF2 – Detect 3 Types of Electromagnetic Radiation with 1 Device – Made in USA by AlphaLab, Inc.

AlphaLab, Inc.

Based on 1 reviews Check latest price
  • Detects all three types of EMF pollution: AC magnetic, AC electric, and RF/microwave
  • Peak Hold captures fast pulses, for measuring fast digital signals
  • 3-axis AC magnetic field, 1-axis AC electric field, 1-axis RF (reads all existing 5G, etc.)
  • Fast indicator bar quickly shows hot spots, and adjustable backlight
  • 1-Year Manufacturer Warranty

User questions & answers

Question: Will this work in India/ Europe
Answer: Yes, this meter will work anywhere in the world. This one version will measure both 50 and 60Hz power regions.
Question: Will this pick up UHF and microwave
Answer: Thank you for your question. This meter will detect all three types of electromagnetic pollution.; AC magnetic, AC Electric and RF/Microwave.
Question: Does this pick up emf/rf at a distance, or do you have to hold it right next to the source
Answer: This meter will pick up EMF/RF at any distance, as long as the field is strong enough.
Question: Does this read digital RF from cellphone towers, wifi, wireless LAN, etc
Answer: The TF2 RF section is great for measuring the EMF emissions of cellphone towers, Wi-Fi and mobile phones. When reading RF emitted by digital devices, such as mobile phones, Wi-Fi routers and smart meters, the Peak Measurement (small numerals in the upper-left of the display) is of more interest than the Field Measurement (large numerals at the bottom). The information from digital RF devices is transmitted in brief packets that occur irregularly (perhaps once per minute with smart meters and several times per second with Wi-Fi transmitters or mobile phones that are in use). The Peak Measurement detects these packets and displays the strongest packet for several seconds before resetting itself.

Product features

New Features and Improved Specifications

  • Easy to use: just turn the knob to the type of field to be measured
  • Detects all three types of EMF pollution: AC magnetic, AC electric, and RF/microwave
  • Large LCD for crystal clear, accurate readings with adjustable backlight
  • Peak Hold captures fast pulses, for measuring fast digital signals
  • Sensitive RF mode for measuring mobile phones and Wi-Fi EMF
  • AC magnetic measurements are 3-axis, allowing for quick readings, regardless of meter orientation
  • Unique feature-- does both standard AC readings and weighted (emphasizes high frequencies)

Specifications

Hidden Camera Detector YICAM Anti Spy Detector Wireless RF Bug Detector GPS Signal Tracker GSM Radio Frequency Finder Laser Lens Magnetic Field Detectors with 3 Detection Modes Scanner

Based on 30 reviews Check latest price

Product description

Worrying about being tracked in the Car?

Worrying about being monitored in the Office or Hotel?



YICAM anti spy detector is a wonderful solution for you to protect your privacy. The detector is a combination of RF wireless signals detection, magnetic field detection and hidden camera detection. It can use in anti Sneak shots, anti-tracking, anti-radiation and so on. Your personal privacy protector, anywhere and anytime!



MS button: Detection and alarm mode can be switched by this button. The sound alarm mode and vibration alarm mode can be switched by this button too when you press it one time.

2 alarm mode: Sound alarm mode and vibration alarm mode



-How to operate?

(1 )When power on the detector, the default detection & alarm mode is RF wireless signals detection with sound alarm mode. And the buzzer alarm occurs when detection signal reaches the seventh indicator

Press the MS button once, the mode will be RF wireless signals detection with vibration alarm mode.

Long press the MS button once till the MS button indicator turn off and the GS button indicator light up. the detection mode will be Magnetic field detection. Using the probe pole to search around, the top of the pole will light up when there are magnetic field.

Camera detecion: Pressing the GS button, six high brightness laser lights turn on Equipped with the laser light and Filter Mirror for scanning invisible cameras and determining the position of the hidden camera through the reflective highlight.



Technical Specifications :

-Frequency: 1 MHz – 8000 MHz

-Detection range: > 73 dB

-Detection sensitivity: < 0.03 mV (main band)

-Power: Built-in 3.7V 100 mA polymer lithium battery—a full charge takes 2.5 hours and will last for 4 to 5 hours

-Working current: 60 – 110 mA



Contents

1. Host/Core Processor

2.RF Antenna

3. Magnetic Field Probe

4. Charger

5. User Manual

  • MULTI-FUNCTIONAL DETECTOR: This detector for hidden camera can detect 1.2G/2.4G/5.8G Wireless spy camera with all bugs and locator of Mobile 2G/3G/4G card, GPS locators, Car trackers, magnetic suction positioner, etc.Detection range:1MHz-8GHz.
  • WIDE APPLICATION: The bug detector & camera finder can be used in homes, offices, hotels, motels, cars, bathrooms, dressing rooms, business negotiations, confidential meetings, entertainment venues or as a daily scanner. you can use it anywhere you don’t trust your surroundings.
  • 3 DETECTION MODES: The anti spy detector is 3 in 1 detector that helps to find hidden wireless and wired camera and unwanted GPS tracker. It provides comprehensive anti-spy solution for Anti Sneak Shot/Anti Tracking/Anti Wiretapping. 3 detection modes for your choice include RF signal detection,Magnetic Field detection to locate magnet used to mount GPS tracker onto vehicle.The LED laser lamp is to find hidden camera lenses.
  • EASY TO USE & CARRY: Compact and light-weight is easy for you to carry everywhere, especially the one like travelling. Easy to control via two keys. Long press the “M” Key to start working and switch 2 modes between “RF signal detection” and “Magnetic detection”. Short press is to switch the alarm modes of vibration or beep. Short press the “GS” key to turn on the laser light and long press can change the flashing frequency to find the hidden camera around.
  • CONTINUED GUARANTEED FREE CUSTOMER SUPPORT: YICAM provide worry-free warranty and lifetime professional customer support. Please don’t hesitate to contact us if have any question about our product or the instruction. We will reply at the first time with the most satisfactory solution. ▲Please keep the normal signal equipment turn off when use.

User questions & answers

Question: Our environment is complex, what I can do to improve wireless signal detection accuracy
Answer: Because of the smart connector you only have one position.
Question: Do you have to have internet for this to work
Answer: This keyboard draws from the iPad Pro 9.7" battery, through the Smart Connector (the three small round points on the left side of the iPad Pro), to power the lights and to work work. The brightness of the backlit keyboard can be customized to reduce or increase the power draw from the iPad Pro's battery. As this keyboard is powered by the iPad's battery itself, you may notice a that you'll need to charge the iPad's battery more often, depending on your usage patterns. For my own use, this set up was perfect, as I always have a charger and cable with me for my iPhone/iPad and this saves me from remembering another cable to charge the keyboard too.
Question: Does this detect a hidden listening device (microphone)? And how close do I have to be for detection
Answer: The only key without illumination is the space key.
Question: What I need to notice when I use laser scanning function
Answer: The case is HARD PLASTIC that the iPad Pro 9.6 snaps into. The outside surface, however, is textured such that it does not feel slippery. I find the case overall very nice and functional. The ability to prop it up and be able to use the backlit keyboard I find extremely useful. I did experience more than one the iPad Pro 9.6 and the Case NOT syncing, thus rendering the keyboard non functional. As there was no way to turn on and off or reset the keyboard I was left with no other option but to turn the iPad off and on again, which did resolve the issue. I cannot say if the "fault" lies with the case or the iPad. Again, overall, I am happy with this Hard Plastic case with integrated backlit keyboard. Hope this information proves useful to all.

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