In a way, you need to know what you are looking for before you can know what type of meter you will use. The best meter for the job will be sensitive to the type of EMF radiation you wish to measure and give you the type of information which is useful to you.

Listed below are some additional questions which will help you refine your decision:

• Do I want to measure magnetic fields? Electric fields? Radiofrequency fields?
  
• What frequencies am I most interested in: DC? 60 Hz? ELF? VLF? Microwave?
  
• How sensitive do I need my meter to be?
  
• How accurate do I need it to be? (higher accuracy = higher price)
  
• Do I prefer analog (best for surveys and readings "on the go") or digital (higher accuracy)?
  
• Do I need three axis, or can I get by with single axis?
  
• What special features do I want: audible signal? Multiple capability? Portability? Cost?
• What am I going to do with the information? Locate "hot spots"? Trace faulty circuits? Present findings to others?
  

The following chart will help you compare the various meter options. Of course, if you still can't decide, call or e-mail our technical staff and we will be happy to assist you.

You can jump to more information about the meters by clicking the name of the meter below.
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AC GAUSSMETERS

Cat. #	Meter Name	Freq. Range (Hz)	Useful Range (mG)	Digital or Analog Readout	No. of Axes	Accuracy/ Sensitivity	Typical Applications
A103	K-2 Deluxe	50 - 20,000	1.5 - 20	LED	S	L / L	powerlines, wiring, appliances & ghost hunting
A105	Mag-Temp	30-300	0.1-200	D	S	M / M	also includes K-type thermometer
A107	3-Axis Backlight Gaussmeter	30-5000	0.01-250	D	T	M / M	general EMF surveys
A108	3-Axis Gaussmeter Ignores Powerlines	30-5000	0.01-250	D	T	M / M	general EMF surveys + evaluation of harmonics
A111	Single Axis Digital	30 - 300	0.1 - 199.9	D	S	M / M	accurate ELF readings, powerlines, appliances
A121	E.L.F. Zone	20 - 10000	0.25 - 8	LED	S	L / M	Locate "hot spots", paranormal work, very low cost
A130	Dr. Gauss/ GaussMaster	50/60	0 - 10	A	S	M / M	Audible tone and analog readout; great for demonstrating fields to others
A144	ElectroSensor	50/60	1.3 - 30	LED	S	M / M	Very low cost, easy to see in dark
A150	Trifield Meter	50 - 100k	0 - 3.0 0 - 100	A	T	M / M	general purpose survey, highly recommended
A154	Personal EMF Alarm	50 - 100k	0 - 3.0 0 - 100	A	T	M / M	meter and audible alarm for AC magnetic, AC electric, and RF fields
A155	Trifield Ext. Range	5 - 100k	0 - 3.0 0 - 100	A	T	M / M	general surveys, esp. when low frequencies suspected
A153	Switchable 1 & 3 Axis	13Hz - 75kHz	0.01-1999	D	S/T	H / H	high accuracy readings & surveys, distinguishes ELF and VLF
A171N	FW Bell 4180	30 - 2000	0.1 - 599	D	T	H / H	high accuracy readings & surveys, view X,Y,Z and SUM
A172N	FW Bell 4190	20 - 2000	0.01 - 1999	D	T	H / H	high accuracy readings & surveys, view X,Y,Z and SUM, PC interface
A175-C	EVP Listener	20 - 20,000	1 - 200	audio	S	L / L	gives audio signal which corresponds to VLF AC magnetic field
A180	VLF Magnetic Probe	25 - 3000	1 - 50,000	voltage	S	H / H	gives voltage outputs which corresponds to ELF AC magnetic field
A1181	Magcheck 95 Sensor	5 kHz - 1 MHz	1 - 2000	voltage	S	H / H	gives voltage outputs which corresponds to AC magnetic field
A194	XYZ Axis EMF Tester	30-300	0.1 - 1999	D	T	M / H	Display each axis reading separately
A1181	Magcheck Sensor	25-3000	.1 mG - 50G	AC Voltage	S	H / H	Probe only, outputs AC voltage, needs DMM
A175	Magnetic Pickup	?	?	AC Voltage	S	? / L	Probe only, outputs AC voltage, needs DMM
A425	Peak/Hold AC Gaussmeter	30-400	0.1 - 200.0	D	S	M / M	output in mG, Peak & Hold features
A459	Pro 1-Axis Gaussmeter	30-300	0.1 - 19,990	D	S	M / M	checks very strong AC magnetic fields, switch between mG and µT, backlit, Max/Min
A471	E-Alert	30Hz - 5.5GHz	0-8+	LED	S	L / L	economy, multi-purpose EMF warning device
A472	EMF Hunter	30Hz - 3GHz	0-8+	LED	S	L / L	multi-purpose EMF warning device, includes thermometer
A473	Simple Radiation Finder	50Hz - 3GHz	0-8+	LED	S	L / L	economy, multi-purpose EMF warning device
A477	EMDEX Snap	40 - 1000	0.1 - 1000	D	3	H / H	professional quality gaussmeter, NIST calibration
A480	Digital Combination Meter	16-2000	0.01 - 20.00	D	S	H / H	easy, sensitive, accurate measurements of both Electric and Magnetic fields
A482	Professional Combination Meter	5Hz -100kHz	0.001 - 20.00	D	S	H / H	highly sensitive and accurate for E and M fields, AC & DC outputs
A494	Datalogging 3-Axis GaussMeter w/ PC Interface	30 -2000	0.01 - 1999	D	T	H / H	high sensitivity, 3-axis, Datalogging, and PC Interface
A1100	Commercial AC Magnetic Field Meter	50 or 60	0.01 - 1999	D	S	H / H	narrow bandpass, filters out harmonics
A1130	VLF 3-Axis Gaussmeter	1kHz - 200 kHz	0.2 - 1999	D	T	H / H	isotropic, VLF, with data logging
A1131	ELF 3-Axis Gaussmeter	20 - 4000	0.2 - 1999	D	T	H / H	isotropic, ELF, with data logging
A1160	Bandpass AC GaussMeter	50 or 60	0.1 - 199.9	D	T	H / M	narrow bandpass, filters out harmonics

A = Analog
D = Digital
DMM = attaches to your digital multimeter
LED = Light emitting diode
L, M, H = low, medium, high
S = Single axis
T = Triple axis

DC (& AC/DC) GAUSSMETERS

Cat. #	Meter Name	Freq. Range (Hz)	Useful Range (Gauss)	Digital or Analog Readout	No. of Axes	Accuracy/ Sensitivity	Typical Applications
A112	AC/DC MilliGauss Meter	DC-10kHz	0.1mG-3000mG	D	S	H / H	high sensitivity, measure Earth's field, cargo compliance, and AC fields
A142	Pocket Magnetometer	DC	-20 to +20 or -100 to +100	A	S	M / M	measure permanent & residual magnetism, other ranges available
A149	DC MilliGauss Meter	DC	0.01mG-2000mG	D	S	H / H	extreme sensitivity, measure Earth's field, cargo compliance
A151	Natural EM Meter	DC	.0025 - 1.00	A	T	M / M	meteorological, geological, & paranormal studies
A420	MagnaProbe	DC	-	visual	T	-	3D visualization of DC magnetic field, plus polarity
A1101	Hall Effect Gaussmeter	DC	0-2 0-20 0-200 0-2000	D	S	H / M	measure intermediate to strong DC fields, DCV output
A1132	DC/AC Gaussmeter	DC-1kHz	100mG - 30kG	D	S	H / H	wide frequency range, measure intermediate to strong DC fields, DCV output
A2100	KiloGauss Meter	DC	0-20 0-200 0-2000 0-20,000	D	S	H / L	measure strong DC fields, DCV output
A3100	Geomagnetometer	DC-20Hz	0-.002 0-.020 0-.200 0-2.000	D	S	H / H	measure Earth's field & weak DC fields, DCV output
A1120	DC Viewer Card	DC	-	visual	S	L / L	show pattern of field from permanent magnets

A = Analog
D = Digital
DMM = attaches to your digital multimeter
LED = Light emitting diode
L, M, H = low, medium, high
S = Single axis
T = Triple axis

ELECTRIC FIELD METERS

Cat. #	Meter Name	Freq. Range (Hz)	Useful Range (kV/m)	Digital or Analog Readout	No. of Axes	Accuracy/ Sensitivity	Typical Applications
A150	Trifield Meter	50 - 100k	0 - 1	A	T	M / M	general purpose surveys
A151	Natural EM Meter	DC	0 - 1.000	A	T	M / H	geological, paranormal & meteorological, studies
A152	AC Electric Field Meter	5 - 2000	.02 - .30 .100 - 10	A	S	M / M	test fields from power lines, appliances, and shielding effectiveness
A152-D	Digital Electric Field Meter	40 - 50k	1 - 19,999 (V/m)	D	S	H / H	extremely easy to use, reliable
A155	Trifield Extended Range	5 - 100k	0 - 1.000	A	T	M / H	better for low frequencies
A182	E-Field Sensor Accessory	60	0 - 100	DMM	S	L / H	low cost, relative comparisons
A183N	Body Voltage Meter	40 - 500	1 - 2000mV	D	N/A	H / H	check voltage induced in body by external fields
A403	E-Field Sensor Alarm	50/60	10 - 250	LED, sound	S	M / M	economy electric field detector
A480	Digital Combination Meter	16-2000	1-2000	D	S	H / H	easy, sensitive, accurate measurements of both Electric and Magnetic fields

A = Analog
D = Digital
DMM = attaches to your digital multimeter
LED = Light emitting diode
L, M, H = low, medium, high
S = Single axis
T = Triple axis

RADIOFREQUENCY & MICROWAVE METERS

Cat. #	Meter Name	Freq. Range (MHz)	Useful Range (mW/cm˛)	Digital or Analog Readout	No. of Axes	Accuracy/ Sensitivity	Typical Applications
A109	2.45 GHz Meter for Microwave Ovens	2.45 GHz	0.001-1.999	D	S	M / H	check for microwave oven leakage
A117	Near Field Probe	1 - 6000	depends on meter	Voltage Output	S	M / M	Near Field RF detection. Cell Phone shielding, EMI
A118	RF Detector Probe	0.1 - 1000	0 - 100	D	S	M / M	circuit board RF detection & low cost field strength detection
A119	Broadcast Frequency Counter	30 - 2800	relative	D	S	M / M	gives frequency information of predominant signal
A129	Digi-Field	0 - 12 GHz	relative, AD	D	1	M / H	locate RF hot spots, tune antennas, test shielding
A139	Acoustimeter	200-8000	0.02 - 6.00 V/m	LED & D	S	H / H	radiofrequency measurements, wide range
A150	Trifield Meter	50 - 3000	.01 - 1.0	A	S	M / H	general surveys
A151	Natural EM Meter	0.1 - 2500	.01 - 1.0	A	S	M / H	general surveys, meteorological & paranormal studies
A155	Trifield Extended Range	.100 - 2000	.026 - 260	A	S	M / M	gen. surveys, esp. when low frequencies involved
A158	MicroAlert	0.5-3000	0.001-1	audio	S	L / H	warns about RF radiation, MW oven leakage, protect pacemakers
A164	ScanProbe	2 - 2000	-10dBm	LED/audio	S	H / H	Near Field RF detection. Cell Phone shielding, EMI
A177-IR	Dual RF/IR Detector	1 - 2500	relative	A	S	- / M	Simple RF meter for locating hot spots
A177	Ultrasensitive Wideband RF Meter	1 - 2500	relative	A	S	- / M	Simple RF meter for locating hot spots plus IR detector
A434	RF Power Meter	100 - 6000	0.0018mW/m˛ to 580 mW/m˛	D	S	M / H	good value, high sensitivity, wide frequency range
A437	Basic RF Meter	100 - 3000	0.16 nW/cm˛ - 58 µW/cm˛	D	S	M / H	good value, easy-to-use, hi sensitivity RF meter
A481	High Frequency Meter	800 - 2500	0.01 – 199.9 nW/cm˛	D & Audio	S	H / H	reliable, professional RF meter
A483	Extended Range High Frequency Meter	27 - 3300	0.01 – 199.9 nW/cm˛	D & Audio	S & omni	H / H	reliable, professional RF meter, wide frequency
A489	8 GHz RF Meter	10 - 8000	0.1 nW/cm˛ – 3 mW/cm˛	D	omni	H / H	reliable, extra wide frequency
A492	Wireless Radiation Meter	10 - 8000	0.38 nanoW/cm˛ – 106 microW/cm˛	D	omni	H / H	external probe, extra wide frequency
A495	3-Axis RF Meter	50 - 3500	0.4 nW/cm˛ – 30 µW/cm˛	D	omni	M / H	reliable, ultra-low cost, wide frequency
A498	esi 24	16 Hz - 8GHz	0.6 pW/cm˛ – 0.059 µW/cm˛	LED	D	M / H	ultra-sensitive, wide frequency, multi-function

A = Analog
AD = antenna dependent
D = Digital
LED = Light emitting diode
L, M, H = low, medium, high
S = Single axis
T = Triple axis

OTHER TYPES OF METERS

Cat. #	Meter Name	Digital or Analog Readout	Unique Features	Typical Applications
A106	USB Geiger Counter	PC interface	connects to PC for radioactivity measurments and recording	measure radioactivity over time
A113	Tri-Field Meter Kit	LED	kits requires assembly and soldering	measure electric, DC magnetic, and RF
A147	Motion Detector	LED/Audio	easy, portable, and low cost	great for security and paranormal work
A156	Air Ion Counter	D	counts both (+) and (-) ions	meteorological, ESD, static charges, check ionizer effectiveness
A411	Compact DMM	D	good quality, low cost	use with probes to measure temperature, magnetic & electric fields, body voltage
A184	i5 IR Camera	LCD	thermal imaging	visualize heat signature of buildings, people, and more
A186	i3 IR Camera	LCD	economy thermal imaging	visualize heat signature of buildings, people, and more
A188	Electrostatic Locator	A	high accuracy, close range	measure static electricity
A189	Surface Resistivity Meter	LED	103 - 1012 ohm/sq	test any surface for conductivity
A192	DMM with PC Interface	D	upload data to your PC	use with probes to measure temperature, magnetic & electric fields, body voltage
A196	Monitor 4	A	self contained, hand held	measure radioactivity in rocks, soil, jewelry, dental work, water, air, etc.
A196-I	Inspector	D	self contained, hand held	high sensitivity radioactivity measurements, optional PC interface
A400	Pen-type IR Thermometer	LCD	very small, lightweight	handy, low cost, temperature tool, used by celebrity chefs
A401	StrikeAlert	sound, LED	very small, lightweight	lightning early warning device
A407	Vibration Alarm	sound, LED	detect vibration	alerts to presence of movements, footsteps, intruders
A408	Body Voltage Announcer	sound	economy body voltage evaluation	gives sound loudness and frequency which corresponds to body voltage
A415	Mini-IR Thermometer	LCD	very small, also measures local (ambient) temp	handy, low cost, dual purpose temperature tool
A416	AC/DC Clamp meter	D	measure current without disconneting wire	use with probes to measure temperature, magnetic & electric fields, body voltage
A426	Compact Sound Level Meter	D	self contained, palm sized, very low cost	measure sound levels
A440	Infra-Scan	D	self contained, palm sized, very low cost	remote temperature measurement: ovens, freezers, motors, paranormal studies
A452	Socket Tester	LED	simple, self contained	check proper outlet wiring and safe grounding
A475	PaceAlert™	LED/Audio	Alarms to the presence of strong (M, E, RF) electromagnetic fields	designed for pacemaker and implantable defibrillator wearers
A493	Infra-Red Thermometer	D	self contained, hand held, laser pointer	remote high accuracy temperature measurement: ovens, freezers, motors, paranormal studies
A496	Geo-Phone	Sound, voltage	converts vibratrion to AC voltage	hear, quantify, record vibration
A783	Low Cost Radiation Monitor	D	self contained, hand held	budget price, big featured radioactivity meter
A784	Radex RD1706	D	self contained, hand held	budget price, big featured radioactivity meter
A803	Stetzerizer Meter	D	self contained, hand held, very simple	measures "dirty electricity"

A = Analog
D = Digital
LED = Light emitting diode

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