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EMF Meter Detects Radio, Magnetic & Electric Fields - For 5G, Cell Towers, WiFi, Bluetooth, Smart Meters
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Purchase options and add-ons
Brand | TriField |
Power Source | Battery Powered |
Color | Black, Grey |
Item Dimensions LxWxH | 1.5 x 2.75 x 5.25 inches |
Measurement Type | Electromagnetic and RF Fields |
About this item
- 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
Additional Details
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Product details
- Is Discontinued By Manufacturer : No
- Product Dimensions : 1.5 x 2.75 x 5.25 inches; 13.05 ounces
- Item model number : TF2
- Batteries : 1 9V batteries required.
- Date First Available : January 29, 2018
- Manufacturer : AlphaLab, Inc.
- ASIN : B078T2R64C
- Country of Origin : USA
- Best Sellers Rank: #2,977 in Industrial & Scientific (See Top 100 in Industrial & Scientific)
- #3 in EMF Meters
- Customer Reviews:
Important information
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Product Description
NEW! From AlphaLab, Inc. makers of the original TriField Meter Model 100XE.
The TriField EMF Meter Model TF2 is an AC gaussmeter, AC electric field meter, and radio power density meter in a single unit, that combines all the features needed for fast, accurate measurements of electromagnetic fields (EMF). In addition to standard AC measurement modes, a special frequency weighted mode will properly scale the magnetic and electric measurements to indicate the full magnitude of currents produced by each type of field inside the human body. (If only powerline frequency is present, Standard and Weighted will read the same. If higher frequencies are present, Weighted reads higher). Made in USA by AlphaLab, Inc.
Magnetic (“MAG”) Fields: Turn the knob to Standard MAG or Weighted MAG. Read the large numerals in the center. In a typical home or office with low EMF, living areas will read 3.0 milligauss or less on Standard MAG and 5.0 milligauss or less on weighted. In a car (gas or electric), the reading may be higher. “Weighted” emphasizes the frequencies that are higher than powerline frequencies, while “Standard” measures all frequencies equally. Some home locations, such as near the breaker box, will have a higher magnetic field. If you rarely or never visit these high-field areas, the high reading is not important. The fields are only important in locations where you spend time.
The magnetic readings show the field at the location where the meter is held, and is independent of how you orient the meter. It is also independent of whether your hand is blocking the meter. However, the electric (“ELEC”) and RF detectors are different. These sensors read the field correctly when the top of the meter is pointed toward the source, but your hand CAN block these fields, so hold the meter by its lower half when measuring electric or RF.
Electric (“ELEC”) fields: In an electromagnetically quiet home or office, both Standard and Weighted will read less than 50 V/m, but the reading may be higher when the meter is pointed toward fluorescent lights, a wall outlet or switch plate, or an improperly-grounded appliance.
Radio/Microwave ("RF") Fields: This meter reads RF and microwaves in the frequency range 20 MHz to 6 GHz. This includes most new 5G installations, but not experimental millimeter wave 5G. Only the total power level from all sources is displayed. No information regarding specific frequencies is displayed.
Digital RF signals are pulsing. This means that the peak power density (see PEAK on the upper left of the screen) is higher than the average power density (main number in center) and you will see the bars pulse up and down if digital RF signals are present. THE MAIN (AVERAGE) NUMBER MAY BE FLUCTUATING. THIS IS A PROPERTY OF DIGITAL SIGNALS; IN THIS CASE, THE PEAK NUMBER IS MORE CONSISTENT.
A “smart meter” from your electric power company only pulses about once a minute. To read this pulse strength, hold the TF2 near the “smart meter” and wait for the bars to jump. Then read the PEAK number, which will hold for several seconds. Smart Meters from the gas company pulse much less frequently (perhaps only once a day) so it is difficult to read RF from them, but they pulse so infrequently that it is probably irrelevant. Wi-Fi routers, that are broadcasting, pulse more than once a second. Computers (and other devices that are on line with a WiFi router) emit much less RF power than a router. Microwave ovens leak a significant amount of RF, but it is more continuous, not digital pulses.
A RF quiet area will typically have less than 1.000 milliwatts per square meter as a peak (highest PEAK reading after watching the meter for a minute), and 0.200 average (the large numerals). RF can be effectively shielded by placing any metal sheet (aluminum foil or aluminum siding) or metal mesh (aluminum screen door material) between you and the RF source, which is typically a cell tower. Metal sheet or mesh affects RF in the same way that a mirror reflects light. Note that both RF and electric field are affected by where you stand or position your hands relative to the meter. These fields are usually stronger near the surface of your body because you are electrically conductive. If you hold the meter, it will read the field correctly in the vicinity of your hand. If you set the meter down, the reading will often be lower because the field is lower away from your hand.
Inside an elevator, the RF and electric field are essentially zero. Unlike several other meters which have a false high reading in RF, the TF2 actually reads near zero in this environment. Near zero-field environment can also be achieved by wrapping the meter in aluminum foil (except for a small opening to see the display). This demonstrates how well foil will shield RF and electric field.
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 RF signals
- Sensitive RF mode for measuring the signal from mobile phones and Wi-Fi EMF. Specific frequency information is NOT displayed.
- 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
|
|
|
---|---|---|
AC MagneticSensor Type
Frequency Range (NOT displayed)
Accuracy
Maximum Range
Sensitivity (Resolution)
|
AC ElectricSensor Type
Frequency Range (NOT displayed)
Accuracy
Maximum Range
Sensitivity (Resolution)
|
RF/MicrowaveSensor Type
Frequency Range (NOT displayed)
Accuracy
Maximum Range
Sensitivity (Resolution)
|
Lightweight Handheld | Weighs under 13 oz. |
Battery (included) | 9V alkaline battery with indicator |
Battery Life Backlight Off | > 20 hrs |
Battery Life Backlight On | > 12 hrs |
Product guides and documents
Videos
Videos for this product
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My Honest Review + Readings through House!
AllThingsIntentional
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Why I prefer this EMF reader.
The Check Point Professor
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My favorite EMF meter and how it works
🟠🟢 LGJ Reviews 🟢🟠
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A moms thoughts on the TriField EMF Meter
A Moms Thoughts
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Customer reviews
Customer Reviews, including Product Star Ratings help customers to learn more about the product and decide whether it is the right product for them.
To calculate the overall star rating and percentage breakdown by star, we don’t use a simple average. Instead, our system considers things like how recent a review is and if the reviewer bought the item on Amazon. It also analyzed reviews to verify trustworthiness.
Learn more how customers reviews work on AmazonCustomers say
Customers like the rf compatibility, value, ease of use, performance, and quality of the electric circuit testing device. They mention that it clearly measures frequencies from cell phone, wifi, and microwave, and is a very reasonable entry-level machine. They like that the meter functions well and covers the artificial EMF spectrum from extremely to extremely low.
AI-generated from the text of customer reviews
Customers find the electric circuit testing device easy to use. They mention that it is super easy to set up, and simple to use, making it easy to understand the results. Customers also find it easy and simple set up to check the signals in their house to get a feeling of how strong they are.
"...Very advanced for an amateur." Read more
"Works great and simple to use." Read more
"...It’s easy to operate, it measures 3 of the 4 most important frequencies (hard to find in one meter!),..." Read more
"I bought this to monitor my house for safety; It was easy to use. Also used it in other people’s homes with good results" Read more
Customers like the performance of the electric circuit testing device. For example, they mention it functions well, covers the artificial EMF spectrum, and is a great tool. Some say that it works great to help find low EMF spots wherever they go, and that it has better features and utility than instruments at over.
"Works great and simple to use." Read more
"The meter functions well and covers the artificial EMF spectrumfrom extremely low frequencies (50-60 Hz, found with power lines)..." Read more
"...Yes the function is great, as the other reviews elaborate, but for me, I am impressed that somebody, somewhere, does not make something as cheaply..." Read more
"well priced and works perfectly! lightweight" Read more
Customers like the quality of the electric circuit testing device. They say it has a solid build, is reliable, and is a very precise instrument. Some customers say that the company is awesome and the seller was excellent. Overall, customers are satisfied with the quality and functionality of the product.
"Tried this out on a few things. It is quality and affordable for someone interested in EMF and RF. Very advanced for an amateur." Read more
"...it’s still a safe and excellent choice...." Read more
"...The new case design is smart, modern and high quality. With the backlight on, the display is remarkably clear and informative...." Read more
"...(unlike things made across the Pacific) and has that old, solid feel of long ago...." Read more
Customers like the value of the electric circuit testing device. They mention that it is well worth the price, a very reasonable entry-level machine, and an excellent accurate tool for its price.
"Tried this out on a few things. It is quality and affordable for someone interested in EMF and RF. Very advanced for an amateur." Read more
"...it’s light weight, comparatively small and it’s the most affordable one with these features...." Read more
"...It is too expensive to keep in a drawer if you do not actually understand the functions of it, in my opinion." Read more
"well priced and works perfectly! lightweight" Read more
Customers like the rf compatibility of the electric circuit testing device. They mention that it has RF readings, is useful to have several RF detection functions in one small meter, and is fine for testing RF ranges up to 6GHz, but 5G ranges extend out to. It has been useful in finding comparative estimates of RF between different spots in their home, and it's great for measuring radiation. The RF Range easily detects Wifi and Smart Meter bursts, and the peak hold feature resets. It's also been useful for verifying radio transmitter operation at remote sites, and its extremely accurate.
"...It’s easy to operate, it measures 3 of the 4 most important frequencies (hard to find in one meter!),..." Read more
"...The TF2's extended RF frequency range allowed me to check my 5 GHz WiFi access points and note the intermittent pattern of actual transmissions...." Read more
"...- Signal strength decreases dramatically with distance, about a factor of 10 every 2-3 inches at first...." Read more
"This item is great for measuring various sources of radiation, and a very intuitive display that shows both current and recent peak spikes..." Read more
Customers find the readability of the electric circuit testing device to be easy. They mention that the display is clear, the unit is easy to handle, and it gives good readings. Some customers also mention that it can read electrical, magnetic, and EMFs from their phone or WIFI. Overall, customers are satisfied with the read-ability of this product.
"...With the backlight on, the display is remarkably clear and informative...." Read more
"...is great for measuring various sources of radiation, and a very intuitive display that shows both current and recent peak spikes..." Read more
"This was the 3rd meter I have brought. Easy to read, simple and easy to set up.all the other meters had warnings that were false...." Read more
"Easy to use and easy readout. Instruction booklet enclosed was easy to understand the various measurement methods...." Read more
Customers generally like the responsiveness of the electric circuit testing device. They mention that it is a super sensitive and reliable measurement tool, and very high quality unit.
"...It does well picking up EMF and electric fields, the sensitivity is very impressive, so although I do not have a way to confirm all the numbers, it..." Read more
"...was quicker to change a reading when moving the meter in/out...Seemed more sensitive......" Read more
"...but I find it worth every penny as it is reliable and it seems very sensitive and accurate...." Read more
"I have the original trifield as well. This one seems to be more sensitive and more alarming. Which I like...." Read more
Customers are mixed about the accuracy of the electric circuit testing device. Some mention that the readings are very precise, and it easily helps you pinpoint the source. However, others say that it's harder to get good readings from these devices because the signals vary a lot, and you get very high readings when you are around metal. Another con is that it is not as sensitive for measuring radio and microwave radiation, which makes it really difficult to see, especially outdoors.
"The meter functions well and covers the artificial EMF spectrumfrom extremely low frequencies (50-60 Hz, found with power lines)..." Read more
"...was jumping as the speakers were functioning, it was accurately picking up the fluctuation in the field from the speakers being utilized...." Read more
"...oven is not a point source of radiation hence the inverse square law is not accurate at room-sized distances...." Read more
"...Trifield was not so valuable but this newer one has audio and a digital readout, very efficient at helping assess problem areas...." Read more
Reviews with images
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Top reviews
Top reviews from the United States
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from extremely low frequencies (50-60 Hz, found with power lines)
up to higher frequencies found with cell phones and towers,
wireless networks, etc.
A meter such as this may be useful for you if you are experiencing
health symptoms that you cannot explain. Sleep problems are a
common symptom reported by people who may be sensitive to
electromagnetic radiation. Other symptoms include headaches,
fatigue, memory and concentration problems, and anxiety.
Martin Pall, an advocate for EMF safety, published a review of
studies in which he summarized common health symptoms
associated with EMF exposure from sources such as mobile
phone base stations. It is entitled "Microwave frequency
electromagnetic fields (EMFs) produce widespread
neuropsychiatric effects including depression". It was
published in the Journal of Chemical Neuroanatomy in 2016.
Electromagnetic radiation is an international concern, and over 400
PhDs and MDs have signed a petition against 5G rollout until
its health effects can be fully examined. There is also a petition
against space and earth 5G rollout available on the web that anyone
can sign. There you can find more information about potentially
damaging effects of electromagnetic radiation.
Im extremely sensitive to ElectroMagnetic Frequencies/Radiation so, having a meter is such an Important first step in feeling better AND being proactive with your health. I take it everywhere with me because EMR affects my sleep, mood, energy and health. There’s a sense of comfort having the meter in hand.
Customer service 10 star ⭐️
Customer SERVICE:
10 ⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️⭐️
I worked with Kristina at AlphaLab. and she was great. Foremost, she acknowledged a couple of design flaws with out getting defensive. She said AlphaLab is making note of customer feedback to make improvements for future models. This is professional and logical; why waste time defending things if everybody knows here’s a problem with them. In addition to being honest, they followed through on everything they said...and quickly. She stayed on top of things and was never out of touch more than 2 days. She took the initiative when it came to a technical issue and sent out a replacement meter before I asked. Then, even after the replacement worked perfectly, they still offered a full refund because the design inconveniences! That’s impressive and definitely uncommon. I think this shows integrity. The communication was easy and honest. Offering me the refund reassured me so much, it helped me decide I wanted to keep the meter . I wish more companies and service reps were like them....outstanding!
The meter arrived with battery already installed. The new case design is smart, modern and high quality. With the backlight on, the display is remarkably clear and informative. The analog display (the bars) uses a logarithmic scale to convey maximum information at a glance. The digital read-out updates several times a second, frequently enough to track a changing value but still allowing the value to be read. The peak value digital read-out significantly boosts the meter usefulness by capturing short signals that otherwise would not be reflected in the analog or digital read-out. The hold time of the peak read-out is just right.
While initially checking out the meter around the house, I was amazed that holding the meter in front of a loudspeaker produced a field strength display synchronous with the music playing (should not have been amazing, of course). The TF2's extended RF frequency range allowed me to check my 5 GHz WiFi access points and note the intermittent pattern of actual transmissions.
While checking my microwave, I did notice a scale gap since the leakage safety limit at two inches is 5 mw/cm^2 vs. the meter's scale limit of 1000 mw/m^2. The centimeters vs. meters difference results in factor of 10,000, so the safety limit converted to the meter's scale units is 50,000 mw/m^2, far in excess of the meter's measuring range. So it's necessary to take readings at a greater distance. Using a wooden yardstick to position the meter 36 inches away from the microwave reduces the field strength to approximately 1/320 of the value at two inches. When I performed this measurement I found that my 10-year old microwave significantly exceeds the current safety limit, so I'll need to follow up on that.
*** Follow up - March 11, 2018 ***
It occured to me that a microwave oven is not a point source of radiation hence the inverse square law is not accurate at room-sized distances. Then I located a paper on the NIH website entitled "Exposure assessment of microwave ovens and impact on total exposure in WLANs" which includes an adhoc formula mapping the field strength vs. distance. The so-called "path loss exponent" is a parameter in this formula. It would be 2 for the perfect inverse square law. However, for distances less than one metre, and with 275ml water in the microwave oven, the adhoc value (as listed in the paper) is only 1.20.
This change in exponent means that the RF value measured at 36 inches away from the microwave reduces the field strength to just 1/32 of the value at two inches. With this change of calculation my 10-year old microwave oven is just fine for RF leakage.
Top reviews from other countries
Things to keep in mind: we live in India. Our house is a farm house in a semi-rural area, but is quickly urbanising. Our home is constructed of thick cement that honestly rivals a WWII bunker. It's my understanding people should not be exposed to more than 60 V/m (the standard ELEC setting) and 1 mW/m squared (the RF setting).
What we discovered is this (and what the pictures hopefully illustrate):
--My cell phone, which is an Apple 8 and generally connects to either the WiFi or LTE when using cell service, had a very high reading on RF, and it would frequently max out the reader. Most of the time it got 6-11 and up to 20 mw/m when the call was connected, and 2-3 when not connected. It was at .2-something when in airplane mode. Best to keep calls to a minimum, hold the phone away when connecting, either keep the call short or hold it on speaker phone when talking, and then put it in another room when done. RF is negligible when the phone is far away, so that's good.
--Electrical outlets are really high at 400 V/m when switched on, to the point that it's advisable to switch off all outlets when not in use or when not needed. This is especially true if you sleep next to power outlets due to the positioning of the bed.
--Though this is the case, the V/m drops considerably when one backs up even just a few feet. So, even just moving furniture a few feet away from outlets can help significantly.
--Laptops should never be used when plugged in, because the EMFs were off the charts--it often topped out the reader went to insane levels of 900-1,000! I had no idea how dangerously high my computer got when connected to a power source, and now I will absolutely not use my computer on anything other than battery. In fact, I will be willing to replace the battery in my machine when it gets depleted, rather than use it plugged in. I wish I knew this earlier, as my previous laptop HAD to run from a power source on account of the battery being exhausted. I had used it this way for years, yikes! When on battery, no EMF levels were detected.
--Our router showed 262 V/m. It too dropped when one moved away, to the point that where I sit the next room over, I have a reading of 0 V/m.
--My husband's work station has a number of computer screens, a wireless mouse, wireless keyboard, tons of wires, and he loves his gadgets. He sits next to the router. With all these things, his station is 260 V/m at chair level, worse when he moves closer to the offenders. I'm trying to convince him to rejig his office.
--The large yard enclosing our house (and most houses, I imagine) reads 0 V/m.
--When leaving our house to walk along the road strung with electrical poles (as we do in the evenings), the reading is 60 at my head height and 70 at my husband's. When I hold the reader as high as it can go, the reading as 120+ V/m. The reading is 120+ at head height when walking past the transformers and junction boxes. I'll be rethinking the walks up and down the road, for sure.
--On the second floor, the reading is 0: this is good, considering that the poles get more intense with height. Thankfully the house seems far enough away to put the influence of these poles to null.
I can edit this review and include more info when we visit our flat in the heart of the city, to see if that makes a difference. Hopefully this helps either persuade someone to buy the product or be mindful of the things I learned. So yeah, great product, definitely worth the spend for the information it provided. Very easy to use.
Reviewed in India on April 7, 2023
Things to keep in mind: we live in India. Our house is a farm house in a semi-rural area, but is quickly urbanising. Our home is constructed of thick cement that honestly rivals a WWII bunker. It's my understanding people should not be exposed to more than 60 V/m (the standard ELEC setting) and 1 mW/m squared (the RF setting).
What we discovered is this (and what the pictures hopefully illustrate):
--My cell phone, which is an Apple 8 and generally connects to either the WiFi or LTE when using cell service, had a very high reading on RF, and it would frequently max out the reader. Most of the time it got 6-11 and up to 20 mw/m when the call was connected, and 2-3 when not connected. It was at .2-something when in airplane mode. Best to keep calls to a minimum, hold the phone away when connecting, either keep the call short or hold it on speaker phone when talking, and then put it in another room when done. RF is negligible when the phone is far away, so that's good.
--Electrical outlets are really high at 400 V/m when switched on, to the point that it's advisable to switch off all outlets when not in use or when not needed. This is especially true if you sleep next to power outlets due to the positioning of the bed.
--Though this is the case, the V/m drops considerably when one backs up even just a few feet. So, even just moving furniture a few feet away from outlets can help significantly.
--Laptops should never be used when plugged in, because the EMFs were off the charts--it often topped out the reader went to insane levels of 900-1,000! I had no idea how dangerously high my computer got when connected to a power source, and now I will absolutely not use my computer on anything other than battery. In fact, I will be willing to replace the battery in my machine when it gets depleted, rather than use it plugged in. I wish I knew this earlier, as my previous laptop HAD to run from a power source on account of the battery being exhausted. I had used it this way for years, yikes! When on battery, no EMF levels were detected.
--Our router showed 262 V/m. It too dropped when one moved away, to the point that where I sit the next room over, I have a reading of 0 V/m.
--My husband's work station has a number of computer screens, a wireless mouse, wireless keyboard, tons of wires, and he loves his gadgets. He sits next to the router. With all these things, his station is 260 V/m at chair level, worse when he moves closer to the offenders. I'm trying to convince him to rejig his office.
--The large yard enclosing our house (and most houses, I imagine) reads 0 V/m.
--When leaving our house to walk along the road strung with electrical poles (as we do in the evenings), the reading is 60 at my head height and 70 at my husband's. When I hold the reader as high as it can go, the reading as 120+ V/m. The reading is 120+ at head height when walking past the transformers and junction boxes. I'll be rethinking the walks up and down the road, for sure.
--On the second floor, the reading is 0: this is good, considering that the poles get more intense with height. Thankfully the house seems far enough away to put the influence of these poles to null.
I can edit this review and include more info when we visit our flat in the heart of the city, to see if that makes a difference. Hopefully this helps either persuade someone to buy the product or be mindful of the things I learned. So yeah, great product, definitely worth the spend for the information it provided. Very easy to use.