TriField EMF Meter Model TF2 – Made in USA - #1 Handheld EMF Detector for Magnetic/Electric/Radio Fields with Unlimited Free Support in The U.S. to Help Solve Your EMF Problems

As an EE and having worked in a building where faulty electrical wiring resulted in wildly wobbly CRT displays, I've always had an interest in perceiving or detecting these everyday but invisible fields. The Trifield 100XE has been on my Wishlist for quite some time, but never quite reached the threshold of an order. Recently I noticed this new model TF2, and the superior specifications and display readability compelled an order. 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.

I still have to learn how to use it. It was quite the little investment. I love it though, made in the United States runs on a single 9 V. Battery comes with a nice case and directions, works perfectly. I just need to update my knowledge base to understand it all. very happy with my purchase. I would not even consider purchasing a lesser brand or quality!!! Thank You TriField for making such a quality instrument!

I love this device. After reading information from the international meeting about Cellular radiation concerns at the Israel Institute for Advanced Studies and Dr. Devra Davis on breast cancer, and being a physician myself, I wanted to test my home and my habits. The device is easy to use— just put in the enclosed battery and turn it on. I found much to my surprise that my seat at the kitchen table was a hot spot for intermittent RF probably from my geothermal heating system just below the floor. It was very helpful to put the meter on my chest and watch the effect of simply moving my cell phone an arms distance away. Dittos for getting my husband to stand back 10 feet from the big OLED TV. ( Standing within two feet he was exposed to bursts of RF 5-6 times the federal maximum recommended exposure level. Now, sadly, this does not measure 5G but hopefully that technology will be available in the future. And when it is I will make sure to get this brand. The Company is awesome. I had my meter fall off my coffee table with a stack of papers and it hit just perfectly to maximize impact. It damaged the RF part of the device while the rest (electric and magnetic fields) were ok. I was sad but contacted the company. They promptly responded and coordinated return. They fixed it at no cost and turned around the repair in under a week. Best customer service you could want. You will a learn a lot by having this device in your life. We are being bathed in cellular radiation and as Dr Davis said, the same technique for denial of cigarette smoking dangers are being used to deny cellular phone radiation danger. I live daily with Ionizing radiation as an Orthopaedic Surgeon, and I’m not unreasonably paranoid, just reasonably cautious. I am a member of the first generation of humans to be bathed in radio waves and now we are going to be subjected to MICROWAVES. It is a great experiment on human physiology. This device helps you monitor and mitigate your exposure.

Works as promised. Have used for several electrical fixes.

This thing comes loaded with the batteries. All you do is pull the tab. Don’t have to read 1 million directions. Just wanted to learn about things in my house that might be admitting dangerous things from my health! I hate putting things together and reading directions this I literally pulled the tab and went to work

I really like this meter. Seems to be very accurate. One thing that would be great if they would add would be some kind of an ability to look at history. RF frequencies are very difficult to kind of track down and they come and they go. One thing that this does, it tells you the peak and then it also tells you the average, which is very helpful. But when when the levels change so much it can be a little overwhelming to get a handle on it so that’s why I suggest some kind of a history where you could look at maybe a period of several minutes and take the average over that timeframe. Download it and analyze it. But other than that, the device is great. One other thing I would suggest to the company is that they add some kind of a handle or a grip to the to the meter because it’s a little slippery and I have to be careful that I don’t drop it. There’s a few other minor things but overall I think it’s a great meter.

Great meter, just wish they made models for higher frequencies - if they made a modular model with detachable antennas, and then sold various antennas ranging from the bottom all the way up to 30 GHz, I would buy one of those antennas. They wouldn't cost much to manufacture, and they could easily sell them for $25-$50 each. I would love to be able to measure EMF from the kilohertz range all the way down to 10 millimeter (30 GHz) waves.

This is a great EMF Detector durable, accurate, and size is perfect for work.