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Meters, Sensors, and Detectors to Check Microwave Leakage    
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Microwave Oven Leakage Meters
If Eggs Explode In The Microwave Oven…

What Happens To Your Brain
When The Radiation Leaks Out?

Have you ever watched up close as your leftovers heated in a microwave oven? Has your child? How much body penetrating microwave radiation do you think you took in? Would you like to know before you do it again?

Microwave oven leakage is serious business. Every year millions of children, pregnant women, and people of all ages stand too close to an operating microwave oven, exposing themselves to dangerous levels of body penetrating microwave radiation. Microwave radiation is known to cause cataracts, birth defects, cancer and other serious health problems. Warning labels are included in every oven owner's manual. The FDA takes the problem so seriously, it has set legal limits on the amount of leakage permitted. Check your oven at home, at work, at school!

Link to MW Oven Standards


Microwave Leakage Meter Image

Digital Accuracy Microwave Leakage Meter Image

Here's a unit which will give you not only accurate digital readings of the amount of leakage from microwave ovens, but it also provides an audible "beeping" alarm and red flashing light when it senses microwaves above the 5 mW/cm² danger threshold! Ergonomically designed to fit comfortably in your hand, it is so easy to use: just press the ON button, then press and hold the auto range ZERO button to adjust to zero before each use. Then check the seal of the operating oven door. Sensitivity down to 0.01 mW/cm² at 2450 MHz, it will read all the way up to a roasting 9.99 mW/cm² in hundredths of mW/cm². Battery operates for more than 12 months under normal use. Never needs re-calibration. Excellent reliability and high precision instrument. Complete with carry case to keep your unit in perfect condition.

And as a bonus, this unit can be used to measure radiated power from other wireless devices using the 2450 MHz analog frequency (good from 2350 to 2550 MHz). Has nice carry case and backlit display. Uses one 9V battery (not included) or can be powered by optional external AC/DC9V adapter. One year wty and ±1dB accuracy. This is the unit we recommend if you need more information about your oven leakage. CE compliant.

Microwave Oven Leakage Meter (Cat. #A138) ....... $34.95 add to cart

What our customers tell us:

“Meter works well. I scanned all around my microwave and as I suspected, the upper left hand corner had a higher than accepted reading due to some food that had caught fire in the microwave. The seal on the door looks okay but the meter gave a warning sign that the radiation is too high.”

D.E., Henderson NV

“Delivered within the time agreed on with good paperwork and instructions included. Meter worked well right out of the box - just as advertised.”

J.S., Corsicana TX


Microwave Detector Module

Miniaturized Detector for 2.45 GHz

Microwave ovens leak radiation. Most power seems to leak from the oven door, or vents on the side, but some also leaks through the window. Place this detector outside of your microwave while it’s running and move it around the find the maximum radiation leakage areas. A red LED will light up when >1mW of power at 2.45GHz is detected and will get brighter as the power level increases. The detector also lights up close to your 802.11b/g Wireless LAN router antennas and flickers as the router transmits and receives. Only about 2 inches long, uses no batteries… it is powered by the microwave energy in the air!

Microwave Detector Module (Cat. #A118) ............ $18.00 add to cart


2.45 GHz Meter for Microwave Ovens

High Precision, Professional Quality

This meter is specially designed for measuring or monitoring RF emissions from microwave ovens reliably. Calibrated specifically for the 2.45 GHz frequency range used by ovens.

Measurement range 0 to 1.999 mW/cm² with 0.001 resolution. Built in audible alarm at 1 mW/cm². Best of all, the sensor is located 5 cm (2 inches) from the top of the unit so it completely takes the guesswork out of where to position the meter. Simply touch the top of the meter to the oven door/seal/window and make accurate, repeatable readings. Includes Peak Hold feature to capture the highest reading.

Will also measure analog 2.45 GHz (±50 MHz) frequencies from other sources. Has residual sensitivity from 30 MHz to 3 GHz so other frequencies can be detected, but for reference only. Requires one 9V battery. 1 year wty. 2dB accuracy.

2.45 GHz Meter for Microwave Ovens (Cat. #A109) …. $109.95 add to cart

Trifield Meter

Trifield "Extended Range, Broadband" Meter

This meter has the ability to measure microwave oven leakage from 0.026 - 260 mW/cm². As a bonus, this modified version of the standard Trifield Meter offers additional capabilities and has the following advantages over the standard version:

• 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)

Frequency Range
Magnetic 1:
1 mG
0-100 mG
± 20%
5 Hz - 100 kHz
Magnetic 2:
0.2 mG
0-3 mG
± 20%
5 Hz - 100 kHz
10 V/m
0-1000 V/m
± 30%
5 Hz - 100 kHz
0.01 kV/m
0-1 kV/m
Factor of 2
at 2 GHz
100 kHz - 2.5 GHz

With these extended ranges, you can detect slow moving static electric and magnetic fields, concealed RF transmitters, cellular phone radiation, 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 add to cart



This is the least expensive, professional quality, high accuracy microwave oven survey meter available. Single 0.5 to 10 mW/cm² range is extremely easy to use. The mid-scale reading (5 mW/cm²) corresponds to the allowable limit for ovens used in the United States, Canada, and most of Europe. Its detection circuitry uses a patented spiral antenna design. Complete with a beaker and thermometer to measure the output power of the oven in addition to its leakage. PRO MICROWAVE OVEN SURVEY METER Image The meter, beaker, thermometer, and manual stored in a rugged, foam-lined carrying case. Compact and highly portable. NIST Traceable Calibration to IEEE standards at 2450 MHz for confident, consistent readings. Narda Model 8217. 1 yr mfr warranty.

Pro Microwave Oven Survey Meter (Cat. #A429) …… $545.00 add to cart
Sorry, this item is not available for export outside USA

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