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.

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  • $168.00
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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)

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).

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.

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.

RF-- 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. An 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.


AC Magnetic AC Electric RF/Microwave
Sensor Type 3-axis, true magnitude 1-axis, true magnitude 1-axis
Frequency Range 40 Hz – 100 kHz 40 Hz – 100 KHz 20 MHz – 6 GHz
Accuracy ±4% @ 50/60 Hz ±5% @ 50/60 Hz ±20% @ 1 GHz
Maximum Range 100.0 milligauss 1000 V/m 19.999 mW/m^2
Sensitivity (Resolution) 0.1 milligauss 1 V/m 0.001 mW/m^2

Battery (included) 9V alkaline battery with indicator
Battery Life Backlight Off > 20 hrs
Battery Life Backlight On > 12 hrs