The TriField Meter is the most economical combination of magnetic, electric, and analog radio/microwave detection in one
package. This meter combines all these unique features with fast, reliable measurements of
Continuous sampling needle gauge readout;
3-axis magnetic sensitivity;
Two separate scales for magnetic field readings;
Hand-held portability and simplicity.
The TriField Meter will accurately measure EMF pollution from these "hot spots" in your home, office, or work
environment so you can take steps for "prudent avoidance":
poorly grounded wiring
microwave oven doors
strong analog RF transmitters (such as leakage from a microwave oven, and not for digital signals)
TV's & computers
other electronic equipment
50 Hz - 100 kHz
50 Hz - 100 kHz
50 Hz - 100 kHz
Factor of 2 at 2 GHz
50 MHz - 3 GHz
What is unique about this meter? Lowest cost 3-axis meter, lightning fast response needle gauge, 3 meters in one
Have peace of mind and confidence in knowing where this body penetrating pollution is coming from, and how powerful it is, so you can protect yourself and loved ones. Instruction booklet and 9V battery included. RF capability is not for digital signals. One year limited warranty. Made in U.S.A.
Trifield Flat Frequency Response Meter (Cat. # A150-F).....$149.95
TRIFIELD METER: Frequency Weighted
This modified version of the Trifield Flat Meter has all the same specifications with this one important difference: magnetic field response is frequency weighted. Frequency weighting gives a better indication of the biological impact of the field.
It is important to note that readout is frequency weighted from 30 to 500 Hz, and calibrated at 50 or 60 Hz. What this means is that a 2 mG magnetic field at 60 Hz will read "2" on the meter, but 2 mG at 120 Hz will read "4". From 500 Hz to 1000 Hz, the response is flat ±20%. Above 1000Hz, sensitivity decreases with increasing frequency.
TRIFIELD METER 60 Hz calibration (Cat. #A150-60).....$149.95 TRIFIELD METER 50 Hz calibration (Cat. #A150-50).....$149.95
Specify 50 or 60 Hz calibration when ordering
What our customers tell us:
"Didn't know much about EMF's before I got this meter. Found out how much radiation I get from the cable lines across the street as well as in my house. I take it to friends home to show them how much they are exposed to. Easy to use. Love this meter."
R.S., Rosemount, MN
Trifield "Extended Range, Broadband" Meter
This modified version of the frequency weighted Trifield Meter has the following advantages:
The magnetic field sensor has enhanced sensitivity to frequencies below 50Hz
(for example, sensitivity at 5 Hz is 33 times greater than the regular Trifield meter)
The RF sensor is frequency-flat over the extended range of 100 kHz - 2.5 GHz.
This fills the gap of 100 kHz - 50 MHz missed by the regular Trifield meter
(However sensitivity is shifted to a range of 0.026 - 260 mW/cm²) It is useful for strong analog RF signals such as leakage from a microwave oven, and not for digital signals
5 Hz - 100 kHz
5 Hz - 100 kHz
5 Hz - 100 kHz
Factor of 2 at 2 GHz
100 kHz - 2.5 GHz
What is unique about this meter? Useful for ELF frequencies below 50 Hz, and RF below 50 MHz, good for very strong RF signals
With these extended ranges, you can detect slow moving static electric and magnetic fields, very weak AC electric fields from wall switches and concealed wiring, and lots of other low frequency EMF sources you might have missed, as well as fine tuning your shielding efforts!
Trifield Extended Range Broadband Meter (Cat. #A155)........$189.95
TRIFIELD METER (MODEL TF2)
Brings The Trifield Meter Into The Digital Age!
The original Trifield meter has been around forever and it was a favorite of ours. This improved version is even better! The TriField Meter will test EMF pollution from "hot spots" in your home, office, or work environment so you can take steps for "prudent avoidance”. Completely self-contained, no parts to lose. You still get 3 meters in one. Three axis for magnetic and extremely wide frequency response.
Here are some of the upgrades:
A very nice digital display allows for more precise measurements
Frequency flat and weighted measurements can be done by the same meter
The RF portion is 1000x more sensitive and can read frequencies up to 6GHz
Includes backlight and sound function
Shows both instantaneous and Peak readings
Gain peace of mind and confidence in knowing where this body penetrating pollution is coming from, and how powerful it is, so you can protect yourself and loved ones. Instruction sheet and 9V battery included. 1 year ltd warranty. Made in USA.
±4% @50/60 Hz
40 Hz - 100 kHz
±5% @50/60 Hz
40 Hz - 100 kHz
±20% @1 GHz
20 MHz- 6 GHz
What is unique about this meter? RF, magnetic and electric field in one meter, low cost, super easy to use, backlite, sound
Trifield Meter Model TF2 (CAT. #A150-TF2) .......... $168.00
Versatile and Great Value
When your main concern is price, this meter fits the bill. Large backlit display is easy on the eyes and displays both electric field and magnetic field readings simultaneously. Makes quick work of checking for emissions from powerlines, household wiring, appliances, and anywhere that electricity is flowing. But there’s more: in addition to the field strength number, you get a visual and sound indication (alarm) when the field detected exceeds the pre-set “danger” threshold of 40V/m or 0.4μT (4 mG). This is a very handy feature when sweeping a large area or monitoring emissions over long periods. And you can’t beat the price!
Simultaneous readout of electric field in V/m and magnetic field in μT
Range 1-1999 V/m, 0.01-19.99 μT (=1-1999mG)
Preset audio alarms: 40V/m or 0.4μT (=4 mG)
HOLD feature locks display for easier reading
Switchable Average vs. Peak modes
No accuracy specification
Covers ELF and VLF frequencies
Modestly priced. Very simple to operate
Display and instructions in English. Requires one 9V battery
What is unique about this meter? magnetic and electric field in one meter, super low cost, backlite, alarm
MicroTesla Meter (Cat. #A114) ........... $49.95
POCKET PF5 METER
Super Simple and High Accuracy
The PF5 is our newest power-frequencies detector. The PF5 measures electric and magnetic EMFs from house wiring, including those from appliances at home or at work. covering frequencies from 20 Hz to well over 50 kHz. This enables the PF5 to measure the higher frequency electric and magnetic fields emitted by induction cooking hobs, solar-panel inverters, 'energy-saving' compact fluorescent (CFL) lamps and LED lights.
These are amongst the most concerning new sources of our electromagnetic field exposures as the currents they induce in your body are proportional to the frequency. So a magnetic field at 24000 Hz (24 kHz) will induce 400 times more current in your body compared with same strength of field at 60 Hz. Induction hobs, in particular, induce some of the highest internal electric currents in your body in the VLF frequency range. Such currents have been shown to significantly affect the nervous system.
The PF5 is an easy to use, pocket sized, accurate, power-frequencies meter which is ideal for carrying around. It measures both electric and magnetic fields. One button operation. Clear level indication with colored LED lights. So simple!
A line of coloured LEDS shows the level
Electric fields range: 5 - 200 V/m
Magnetic fields range: 0.2 - 20 mG
Resolution: 8 LEDs plus 7 middle points
Accuracy: 50 to 2000 Hz ±10%
Accuracy: 20 to 50000 Hz ±3 dB; with a useable extended response from 15 Hz - 70 kHz
Battery: 9V Alkaline or Rechargeable
Battery life: 25 hours (normal alkaline)
Low battery (6.7V) shown by red V/m LED
What is unique about this meter? magnetic and electric field in one meter, super easy to use, lighted, good accuracy
Pocket PF5 Meter (Cat. #A141) ......... $159.95
Simultaneous EMF and Temperature Readout with Illuminated RED Display
When you need to measure EMF and temperature, you need one hand operation that gives you a wealth of information, and lots of options.
Mag-Temp offers both single axis AC Magnetic field measurement and real time air temperature readings. Display illumination is RED, so it doesn’t saturate your eyes when working in in dark areas. Red flashlight is built-in. Readout in mG or µT, °F or °C. High resolution and fast response. Basic 1 inch K-Type thermocouple is included and it can be used with a variety of commercially available thermocouple probes for extended temperature ranges. Solves the age old equipment problem of "How do I hold all this stuff?"!
9V battery powered, or AC to 9V adapter (not included)
What is unique about this meter? magnetic and temperature in one meter, good for very strong fields, backlite
Mag-Temp Meter (Cat. #A105R) ............... $109.90
ESI 24 EMF MONITOR
Detects & Displays All 3 EMF Types at Once
The very unique ESI 24 checks for all 3 types of EMF: magnetic fields, electric fields, and radiowaves/microwaves simultaneously. Easy to interpret RED / YELLOW / GREEN LED lights indicate EMF level and are supported by a loudspeaker that gives an audible indication of field strengths. Sound frequency/intensity changes with increasing field strengths. Sound can be turned off if you prefer. Allows for quick and easy localization of the sources of different types of EMF. The display shows 5 different levels, ranging from extremely low (i.e. no significant radiation exposure) to too strong for prolonged exposure and distinguishes how much for each radiation type. Super easy and super sensitive.
16Hz – 3kHz
16Hz – 3kHz
50MHz – 10GHz
Includes Enhanced RF Mode in which only RF is measured using all 15 LEDs. Gives greater range and greater resolution. Sources detected by ESI 24: cell phone towers, cordless phones, wireless LAN, Wi-Fi systems, power lines, electrical installations and appliances, baby monitors and alarms, microwave ovens, cell phones, etc.
Magnetic field (nT)
Electric Field (V/m)
15 – 1500 depending on frequency
RF Enhanced Mode (µW/m²)
1 – 2250 depending on frequency
Operates for about 10 hours on one 9V battery (included). 2 year warranty.
ESI 24 EMF Monitor (Cat. #A498) .................................. $280.00
Improved Tri-Mode (Hi/Low Frequency) Meter
Three Devices in One
For low cost and versatility, you can’t beat this device. It measures both types of low frequency EMF (electric and magnetic fields) plus high frequency radiowaves (microwaves). Covers a very wide frequency range with good sensitivity. Antennas are internal so there is nothing to lose or break off. There are 2 ranges for magnetic, permitting the user to check for both very weak and very strong fields (up to 600 mG). What is unique about this meter is that it also shows the frequency of the predominant RF signal (up to 2.7 GHz).
Now with larger display, sound volume control with earphone jack, USB port for external power supply (for extended use), and data logging with PC interface and adjustable intervals! Includes illuminated bar which indicates “danger” level with green/yellow/red LEDs which anyone can understand.
RF: 100MHz to 8GHz (0.5uW/m2 to 1.8W/m2 = (14mV/m to 26.2V/m)
Magnetic1: 50Hz to 10KHz (0.1uT to 60uT) = (1mG to 600mG)
Magnetic2: 50Hz to 1KHz 0.01uT to 1uT) = (0.1mG to 10mG)
Electric: 50Hz to 50KHz = (10V/m to 1000V/m)
RF Frequency: 100MHz to 2.7GHz (-35dBm or higher required)
Fits easily into a pocket or purse for easy travel. Includes sound/alarm and backlight, either of which can be turned off. Uses 1 standard 9V battery. Response is fast enough to measure “smart” meter pulses. Model ED88Tplus.
Improved Tri-Mode Meter (Cat. #A438n) .............. $199.95
DIGITAL COMBINATION METER
1-Axis Electric and Magnetic Field measurements
The Digital Combination Meter boasts several distinct advantages for a meter in this price range:
Wide frequency response: very flat (1 dB) from 16 Hz to 2000 Hz; useful from 5 Hz to 7000 Hz (3 dB)
Tremendous Sensitivity and Range: - Magnetic: 1-2000 nT (0.01-20.00 mG); - Electric: 1-2000 V/m
Accuracy: ±2% ±20 digits at 50/60 Hz
Cool audio tone which resembles a Geiger counter
Simple to operate, easy to read.
YouTube video demonstrating this meter:
16 - 2000 Hz (1 dB); 5 Hz to 7000 Hz (3 dB)
1-2000 nT (0.01-20.00 mG)
1 nT (0.01 mG)
±2% ±20 digits at 50/60 Hz
What is unique about this meter? digital readout E & M, high accuracy & sensitivity, sound
Perfect for home, student, or researcher.
Uses a standard 9V battery, included. Instructions in German and English. 2 year warranty. Model ME3030B.
Digital Combination Meter (Cat. #A480) …… $149.00
EXTENDED FREQUENCY DIGITAL COMBINATION METER
Covers 16 Hz to 100kHz
All the same features as the Digital Comnination Meter above, but covering a wider frequency range. (Model ME3830B)
Extended Frequency Digital Combination Meter (Cat. #A486) …… $228.00
PROFESSIONAL COMBINATION METER
Professional Quality and Versatility
This meters meets all TCO requirements for AC Electric and Magnetic Field measurements. Tremendous sensitivity and highly linear over 4 selectable frequency ranges which allows for determination of ELF compared to VLF readings, ultra-low frequencies down to 5 Hz, and a special filter for 16 Hz typically associated with electric trains. Includes both an AC voltage output (to analyze frequency information or use a headset to hear the corresponding audio frequencies) and a DC output (for long term monitoring with a recording device), Geiger counter style audio output, auto power off, and integrated battery check.
3½ digit LCD display. Power consumption: 15-20 mA.
Includes 8 hour rechargeable 9V battery, AC power supply/charger, and ground cord. Manual in English and German. 2 year warranty. Model ME3851A.
0-200 nT (2 mG)
0.1 nT (0.001 mG)
0-2000 nT (20 mG)
1 nT (0.01 mG)
What is unique about this meter? digital readout E & M, extremely high accuracy & sensitivity, toggle frequency range, AC/DC voltage output, sound
Frequency range settings:
5 Hz – 100 kHz (full bandwidth)
16 Hz (electric trains)
50 Hz – 100 kHz (ELF + VLF)
2 kHz – 100 kHz (VLF only)
Professional Combination Meter (Cat. #A482) ........................ $397.00
Magnetic Field Strength with Frequency, DC -1 kHz
So what magnetic fields do you want to measaure? AC? DC? Need frequency information too? This meter does all that and more. Simlutaneous digital readout of field strength and predominate frequency, true RMS measurement with peak hold, One volt full scale analog voltage output, alarm, dataloging up to 32,000 data points, and 3 % error guarantee. External probe.
Operate in 1 of 3 modes:
300 G (100 mG resolution)
AC only: 20 Hz - 1 kHz
3 kG (1 G resolution)
AC + DC: 0 – 1 kHz
30 kG (10 G resolution)
Completely portable. 4 AA alkaline batteries included and optional 6V DC adaptor available. Choose axial probe, transverse probe, or both. Zero gauss chamber (sold seperately) helps when zero-ing the unit.
Bonus: For a limited time, order the DC/AC Gaussmeter and get a free 4 inch (0.5 inch ID) Mini Zero Gauss Chamber.
Click here to add this item:
Free Mini Zero Gauss Chamber
Zero Gauss Chamber
This chamber can be used with the DC/AC Gaussmeter to provide a zero gauss (magnetic field-free environment) reference, enabling you to take absolute readings of the ambient magnetic field (the Earth's magnetic field is typically around 500 mG). Concentric welded 12" long tubes (1" ID chamber) with stand, made of high permeability magnetic shielding alloy provide excellent shielding.
Zero Gauss Chamber (Cat. #A3105) ......... $395.00
Need something smaller? This mini version weighs only 0.7 ounces and is about the size of a pack of gum. Easy to keep in a purse or hang on a keychain. Monitors AC magnetic field (3 axis) and RF. Perfect when you are on the go.
PaceAlert Mini (Cat. #A906) ............... $125.00
In The News:
A research team at the Academic Medical Center at the University of Amsterdam examined the effects of GPRS and UMTS signals on critical care equipment such as ventilators and pacemakers. There were almost fifty incidents of EMI impacting the devices, and 75 percent of these could be characterized as significant or hazardous. Problems observed - a total switch off and restart of mechanical ventilators, complete cessation with no alarm sounded of syringe pumps, and incorrect pulsing of an internal pacemaker. Second-generation phones based on GPRS technology generated the most serious instances of EMI—sometimes from as far away as three meters.
PERSONAL EMF ALARM
Attention all pacemaker wearers! Attention all paranormal researchers! Attention electrical sensitives!
What could be better than a meter which alerts you with a loud audible alarm when it encounters a field? How about a meter which allows you to set the sensitivity of the alarm? How about a 3 axis meter? How about a meter which does all this for AC magnetic fields, AC electric fields, and RF radiation?! This meter does all that, for under $200!!
We are very excited to offer this simple and useful item for anyone who wants to monitor their EMF environment without having to stare at their meter for hour after hour. Carry it with you to alert you when you become exposed to more radiation that you want. Set it in a strategic location to alert you when a field trips the alarm. You set the level (threshold) above which the alarm will sound. Can also be used as a nice analog meter to read field strength. Same specifications as our Trifield Flat Frequency Meter.
Personal EMF Alarm (Cat. #A154) …… $189.95
EMF Meter, Microwave & Temperature in One!
Versatile new meter for detecting cell phone radiation, power line EMF, as well as paranormal research. Combines AC magnetic field detection, microwave sensor, and temperature in a very compact design. Easy to read LED indication and dramatic sound.
For cell phones, microwave ovens, and other high frequency appliances: 500 kHz to 2.4 GHz
0.01 to 0.30 mW/cm² in 10 color-coded increments:
- Green light (safe): Less than 0.02 mW/cm²
- Yellow light (caution): 0.02 to 0.1 mW/cm²
- Red light (warning): higher than 0.1 mW/cm²
For power lines, TVs, computers, AC alarm clocks, motors and other electric appliances: 30 Hz to 5 kHz 1 to 10 mG in 10 color-coded increments:
- Green light (safe): Less than 2.5 mG
- Yellow light (caution): 2.5 to 8 mG
- Red light (warning): higher than 8 mG
Temperature: External temperature probe on 6 foot cable (sold separately).
32 – 102°F (0-40°C) in 5 increments. Audible warning at 99°F
Power: 9V battery (not included) good for continuous use for more than 30 hours.
One-year warranty. Very unique!
What is unique about this meter? magnetic field and temperature in very simple format
EMF Hunter (meter only) (Cat. #A473) ……… $79.95
Temperature Probe (Cat. #A473-T) ................... $10.00
With so many meter choices, it can be hard to know what you need to do a proper EMF survey of your home or office. To save you the trouble, we have put together a kit that does everything you will need to check your home for unsafe levels of electromagnetic fields including wifi, smart meters, fluorescent lights, circuit boxes, wiring, appliances, computers and TVs, cellphones, and so much more. We have selected equipment that is easy to use, reliable, and reasonably priced.
With this kit, you can measure:
Low frequency magnetic fields
Low Frequency electric fields
High frequency (radiowaves)
Acousticom2 (measures RF)
Pocket PF Meter (measures E and M fields)
Stezerizer Microsurge Meter (measures dirty electricity)
And a foam lined, professional-looking, locking carry case.
A $484 value, you save $40!
Home Survey Kit (Cat. #A141-kit) ………………… $444.80
The following items are available from other websites. We provide this information as a courtesy. These websites have no affiliation with Less EMF Inc. Proceed at your own risk: