I own two of the best EMF meters on this list and use them regularly in my own home. Once I started measuring EMF around my house, I got pretty particular about which tools and technology actually give you useful information and which ones leave you with blind spots. Everything below is based on personal testing where I have it, and honest research where I don’t.
Affiliate disclosure: Some links here are affiliate links. If you buy through them I may earn a small commission at no extra cost to you.
Quick Picks
- Trifield TF2 — Best all-around meter for most people. Measures all three EMF types. My daily driver.
- GQ EMF-390 — Best for data logging and spectrum analysis. My second meter for deeper dives.
- Safe and Sound Pro II — Best RF-only meter. Third-party certified accuracy. Trusted by professionals.
- ERICKHILL RT-100S (3-in-1) — Best budget pick that covers all three field types.
- ERICKHILL Basic — Magnetic and electric only. Read my note before buying this one.
1. Trifield TF2
My Personal Pick — The best all-around meter for most people
The Trifield TF2 is the meter I reach for most often. It measures all three EMF types, it’s easy to use, and the readings make sense without needing an engineering degree. I’ve used mine to walk through every room in my house, test appliances, check around my JRS Eco router, measure the field around my laptop and other products.
What I like most is the 3-axis magnetic field sensor. Most budget meters only measure in one direction, which means you have to rotate the meter around to find the peak reading. The TF2 picks up magnetic fields from all three axes simultaneously, so you get an accurate reading no matter how you’re holding it.
The RF mode covers 20 MHz all the way up to 6 GHz, which handles Wi-Fi (both 2.4 and 5 GHz bands), cell phone signals, smart meters, and Bluetooth. Use peak mode when testing anything wireless. RF from digital devices comes in pulses, and if you just watch the average reading, you’ll miss the spikes.
One honest limitation: the RF accuracy is rated at plus or minus 20 percent at 1 GHz. That sounds rough, but for home testing purposes it’s fine. You’re generally trying to understand whether a source is low, moderate, or high, not publish research-grade data.
| Spec | Detail |
|---|---|
| Magnetic field range | 0.1 to 100.0 mG (40 Hz to 100 kHz) |
| Electric field range | 1 to 1000 V/m (40 Hz to 100 kHz) |
| RF range | 0.001 to 19.999 mW/m² (20 MHz to 6 GHz) |
| Magnetic axis | 3-axis (true simultaneous) |
| Battery | 9V alkaline, 20+ hours (backlight off) |
| Special features | Weighted mode, peak hold, audio indicator, backlight |
What I like
- True 3-axis magnetic sensing
- Covers all three EMF types in one unit
- Intuitive dial-based controls
- Peak hold essential for pulsed RF
- Long battery life
Worth knowing
- RF accuracy is ±20% (fine for home use, not lab-grade)
- No data logging
- Higher price than budget options
- RF is 1-axis (rotate meter when testing wireless sources)
My take: This is the meter I’d buy again without hesitation. If you only buy one meter, this is the one. It does everything well enough for real home testing, and the ease of use means you’ll actually pick it up and use it regularly.
2. GQ EMF-390
My Personal Pick — For data loggers, spectrum watchers, and detail-oriented testers
The GQ EMF-390 is the second meter I added to my collection, and it fills a different role than the TF2. Where the Trifield is simple and intuitive, the GQ is information-dense and feature-rich. It’s not the meter I grab for a quick sweep of a room, but it’s the one I use when I want to track readings over time or dig into the RF spectrum.
The built-in data logging is what makes it genuinely unique at this price point. The meter stores real-time readings every second with timestamps to 1MB of internal flash memory. You connect it to a PC via USB, download the data with the free EMF-Pro software, and look back at what your environment was doing while you were asleep or away. I used this to monitor RF levels in my bedroom overnight. It’s a completely different kind of insight than a spot reading.
The RF browser displays a visual graph of RF signals over the past 45 seconds, which helps you see whether signals are pulsed or more continuous. The built-in spectrum analyzer lets you identify what frequency a signal is coming from, which is useful when you’re trying to figure out which device is responsible for a reading.
The main trade-off is usability. The display is functional but cramped, and navigating the settings takes some getting used to. I wouldn’t hand this to someone who just wants to walk around their house and get quick readings. But if you want to actually understand your data, this meter rewards patience.
| Spec | Detail |
|---|---|
| Magnetic field range | 0 to 500 mG |
| Electric field range | 0 to 1000 V/m |
| RF range | 0.02 to 9999 mW/m² (up to 10 GHz) |
| Data logging | Yes, 1MB internal flash, PC download via USB |
| Special features | RF spectrum analyzer, RF browser, simultaneous display, rechargeable |
| Made in | USA (GQ Electronics, Seattle WA) |
What I like
- Built-in data logging with PC software
- RF spectrum analyzer (unique at this price)
- Broader RF range up to 10 GHz
- Rechargeable via USB
- Simultaneous display of all three field types
- USA-based company with good support
Worth knowing
- Steeper learning curve than the TF2
- Display is functional but not pretty
- Some mixed user reports on magnetic field accuracy
- Requires time investment to get the most from it
My take: This is my second meter, not my first, and that’s exactly how I’d recommend using it. Get comfortable with the TF2, then add the GQ when you want to go deeper. If data logging or spectrum analysis sounds exciting to you, it’s worth every penny.
3. Safe and Sound Pro II
RF Specialist: The most accurate RF meter on this list, but RF only
I want to be transparent: I haven’t personally used the Safe and Sound Pro II. Everything below is based on published specs, independent testing reports, and the consistent recommendations of building biologists and EMF consultants who use it in professional assessments. I’d weigh their experience heavily here. This community tends to be more rigorous about meter accuracy than most.
It’s third-party certified by Nemko Canada, individually calibrated, and covers 200 MHz to 8 GHz with true response detection between 400 MHz and 7.2 GHz at plus or minus 6 dB. EMF engineers and building biologists regularly recommend it as the minimum standard for professional home testing.
The audio function is more useful than it sounds on paper. A pulsed digital signal like a smart meter transmitting produces a rhythmic clicking pattern. Continuous wave signals sound different. Wi-Fi has its own recognizable signature.
Once you learn those patterns, you are not just reading numbers on a screen. You are developing an ear for your environment. Building biologists who write about this meter regularly mention the audio as something that genuinely changes how they approach a testing session.
The big limitation is obvious: it only measures radiofrequency (RF). If you want a complete picture of your home, you’d need to pair it with a magnetic field meter. That’s why I’d still recommend the TF2 first for most people. But if RF is your primary concern and you want the most reliable readings possible, the Safe and Sound Pro II is the right tool.
| Spec | Detail |
|---|---|
| Measures | RF only (no magnetic or electric) |
| RF range | 200 MHz to 8 GHz |
| Sensitivity | 0.001 µW/m² (extremely sensitive) |
| Certification | 3rd-party lab certified (Nemko Canada) |
| Display | OLED, peak/max/average readings |
| Battery | 2x AA alkaline, 12 to 15 hours |
What I like
- 3rd-party certified accuracy
- Extremely high sensitivity (useful for EHS individuals)
- Audio function helps identify RF sources
- Clean OLED display with multiple reading modes
- Widely trusted by professionals
Worth knowing
- RF only: no magnetic or electric field measurement
- Higher price than budget alternatives
- You’ll need a second meter to cover all EMF types
Where this meter earns its price is in specific situations. If you are an EHS individual trying to identify particular RF triggers, if you are doing before and after measurements around shielding work, or if you simply need to trust the number on the screen rather than treat it as approximate, this is the meter built for that kind of work.
My take: Based on my research, this is the most credible RF meter at this price point. I haven’t tested it personally, but I’ve read enough independent reviews and professional recommendations to feel confident saying: if RF accuracy is your top priority, this is the one to buy.
4. ERICKHILL ER02 (3-in-1)
Budget Pick — A capable 3-in-1 at a reasonable price
I haven’t tested the ERICKHILL ER02 myself, but the specs here are more impressive than you’d expect at this price point. Unlike most budget meters that skip RF or cap it at a low frequency, the ER02 measures all three field types and claims RF detection up to 10 GHz, which would cover most 5G signals you’re likely to encounter at home.
The dual interface is a nice touch. You get both a standard digital readout and a graph view on the same screen, which makes it easier to see how readings change over time as you move around a space. The color-coded backlit display shifts from green to orange to red as levels rise, so you get an immediate visual read without having to interpret numbers.
It sits in an interesting middle ground price-wise. More capable on paper than most budget meters, but still well below the Trifield TF2 in terms of build quality and verified accuracy. The RF detection up to 10 GHz is a bold claim at this price, and I haven’t been able to verify it independently with my own meters. Take the RF range spec with some caution until I can test it directly.
| Spec | Detail |
|---|---|
| Measures | Magnetic, Electric, RF (all three) |
| RF range | Up to 10 GHz (per manufacturer) |
| Display | Dual interface: digital readout and graph view |
| Screen | Color-coded backlight: green, orange, red |
| Battery | Rechargeable, built-in |
| Warranty | 36 months |
What I like
- All three EMF types including RF
- RF range claim of 10 GHz is strong for the price
- Dual display interface is genuinely useful
- Color-coded screen makes readings easy to interpret
- Rechargeable, no disposable batteries
Worth knowing
- RF range claim is manufacturer-stated, not independently verified at this price
- Less proven accuracy than the TF2
- Newer model with a smaller review base than the RT-100
My take: Based on the specs, this is a reasonable option if you want all three field types and the TF2 is out of your budget. The 10 GHz RF claim is promising but I’d treat the readings as directional rather than precise until I can test it myself. I’ll update this once I’ve had a chance to run it against my own meters.
5.5. ERICKHILL RT-100 (Magnetic and Electric Only)
Heads Up — Worth reconsidering: this one skips RF entirely
The ERICKHILL RT-100 is fine for what it does, but it has a significant gap that I think most people don’t notice when they’re buying it: it does not measure RF at all. The Amazon listing even notes this in parentheses, “RF Not Included,” though it’s easy to miss.
The spec sheets confirm it: this meter reads magnetic fields in mG and electric fields in V/m, and that’s it. If you hold it near your Wi-Fi router, it will show you nothing useful about the RF signal coming from that router. Same for your phone, your smart meter, your Bluetooth speaker. Those are RF sources, and this meter is blind to them.
For what it does, the readings are consistent and easy to read. If all you want is a basic check of low-frequency fields near appliances and wiring, it gets that job done. But for most people getting into EMF awareness, understanding wireless device exposure is a big part of what they want to know, and this meter can’t help with that. The ER02 above adds RF for a modest price difference, and that’s worth it.
| Spec | Detail |
|---|---|
| Measures | Magnetic and electric fields only |
| RF measurement | None |
| Magnetic range | 0 to 100 mG |
| Electric range | 0 to 1000 V/m |
| Auto power off | 5 minutes |
| Battery | Rechargeable, USB |
Where it works
- Inexpensive and easy to use
- Consistent readings for low-frequency fields
- Rechargeable battery
- Fine for a basic appliance check
Worth knowing
- No RF measurement at all
- Blind to Wi-Fi, cell phones, smart meters, Bluetooth
- The ER02 above adds RF for a modest price difference
- Auto power off at 5 minutes can be frustrating during longer tests
My take: I’d suggest reconsidering this one for most people. Not because it’s bad at what it does, but because skipping RF leaves too big a blind spot. If your budget only stretches this far, this gives you something. But if you can spend a little more, the ER02 covers all three field types and is the smarter buy.
Which Meter Should You Buy?
Here’s how I’d think about it when choosing between these EMF detectors, depending on where you’re starting from.
If you want one solid all-around meter: Get the Trifield TF2. It measures all three EMF types, it’s straightforward to use, and the 3-axis magnetic sensor alone makes it worth the price over budget alternatives. This is what I use for most of my home testing.
If you’re on a tight budget but still want RF coverage: The ERICKHILL ER02 is the best option in that range. The manufacturer claims RF detection up to 10 GHz, which is strong for the price. I haven’t verified that independently yet, but as a starting point it covers more ground than most budget meters.
If RF accuracy is your top priority: The Safe and Sound Pro II is the most credibly accurate RF meters on this list. Pair it with the TF2 or another magnetic field meter to cover your bases.
If you want to log data over time and dig into spectrum analysis: The GQ EMF-390 is genuinely unique at its price point. I use it alongside my TF2, not instead of it.
If you’re looking at the basic ERICKHILL RT-100 with no RF: I’d encourage you to step up to the ER02 or the TF2. Skipping RF leaves too big a gap for most people’s needs.
What to Look for in the Best EMF Detector
If you’re new to this, it helps to understand that EMF isn’t one thing. It covers three distinct types of fields that require different sensors to detect.
Magnetic fields (ELF/LF) come from electricity flowing through wires and appliances. Measured in milligauss (mG). Your fridge, your electrical panel, power lines, and the wiring inside your walls all produce these.
Electric fields (EF) exist anywhere there’s voltage, even in an unplugged lamp cord that’s still connected to the wall. Measured in volts per meter (V/m). These are easy to reduce simply by unplugging things you’re not using.
Radio frequency (RF) is the high-frequency stuff: Wi-Fi, cell phone signals, smart meters, Bluetooth and anything else transmitted via antenna. Measured in microwatts per square meter (µW/m²). A dedicated radio frequency meter is the most reliable way to measure this field type accurately.
A meter that skips RF leaves a major blind spot. Several popular budget meters quietly omit it, and I’ve flagged each one clearly in the reviews above.
Frequently Asked Questions
Here are answers to the questions I hear most often from people who are just getting started with EMF testing and home safety.
Can a smartphone app replace a dedicated EMF meter?
No, not reliably. Most phones have a magnetometer for the compass function, and some apps tap into it to display magnetic field readings. But the sensor isn’t designed or calibrated for EMF measurement, the readings are inconsistent, and phones have no hardware to detect electric fields or RF radiation at all. I wrote a full breakdown of what phone apps can and can’t actually measure if you want the details.
Do EMF meters pick up Wi-Fi signals?
Most do. A combo meter like the Trifield TF2 detects RF from routers operating at 2.4 GHz and 5 GHz, which covers the majority of home networks. Where meters differ is in how sensitive they are and how accurately they read across the full frequency range. If Wi-Fi is your primary concern, RF sensitivity and frequency range are the specs to look at closely before buying.
Where should I start when testing EMF levels in my home?
Start with the places where you spend the most time, particularly your bedroom. Test at body height, move slowly, and pause near the bed and any wall that might have wiring or a router on the other side. Taking readings before and after a change, like moving a router or unplugging a device, is how you confirm whether it made a measurable difference. For a full room by room walkthrough with real readings, how to test EMF levels in your home covers every source worth checking and what to do with what you find.
What’s a normal reading on an EMF meter?
EMF meters measure electromagnetic fields across three categories, and normal readings vary depending on which type you’re testing.
Here are the precautionary guidelines most building biologists use as a reference:
- Magnetic fields: below 1 mG in sleeping areas
- Electric fields: below 10 V/m in sleeping areas
- RF: below 10 µW/m² for sensitive individuals, below 100 µW/m² as a general precaution
These aren’t regulatory limits. They’re conservative benchmarks based on the precautionary principle. I’ve written a full breakdown of what normal EMF meter readings actually look like across all three field types if you want to go deeper. Regulatory limits from bodies like ICNIRP are orders of magnitude higher, and where you land on that spectrum is a personal decision.
Can a cheap EMF meter give accurate readings?
For a rough sense of high vs. low, yes. For anything more precise, like confirming whether shielding is working or comparing before and after a change, you want a calibrated meter. Budget meters often have poor frequency response, meaning they’ll under-read or miss signals in certain bands entirely. The ERICKHILL ER02’s limited 5 GHz detection is a good example of this. For a full breakdown of where budget meters fall short, read cheap electromagnetic field meter accuracy.
Do I need more than one EMF meter?
Most people don’t, especially starting out. A good all-in-one meter like the TF2 covers the full range of field types you’ll encounter at home. Where a second meter makes sense is if you want higher RF accuracy alongside your whole-home meter. That’s why I eventually added the GQ EMF-390, not to replace the TF2, but to go deeper when I wanted more detailed RF data. Most people only need one of the best EMF readers to get started.
Will an EMF meter detect 5G?
Probably, for most real-world 5G. Most current US deployments use sub-6 GHz frequencies, which all three serious meters on this list cover. The exception is millimeter wave 5G at 24 GHz and above, which requires specialized equipment and is only deployed in very specific dense urban areas. Most people will never encounter it at measurable levels indoors.
How do I know if my meter is accurate?
Run a few sanity checks. Hold it near a running hair dryer or microwave and confirm you get a magnetic field reading. Switch to RF mode near your Wi-Fi router and confirm a signal registers. If either of those fails, something is wrong. Beyond that, most consumer meters are not independently calibrated. The Safe and Sound Pro II is the only one on this list that is, which is a meaningful differentiator if accuracy matters to you.
What frequency range should an EMF meter cover?
For home use, you want coverage from around 50 MHz up to at least 6 GHz. That range captures Wi-Fi at 2.4 and 5 GHz, Bluetooth, cell signals, and smart meter transmissions. Meters that top out at 3.5 GHz will miss 5 GHz Wi-Fi entirely, which is increasingly common in modern homes. Always check the stated frequency range in the specs before buying, not just the field types the meter claims to cover.
What’s the difference between an EMF meter and a Gaussmeter?
A Gaussmeter measures magnetic fields only, typically in milligauss or tesla. An EMF meter is a broader term that usually refers to a multi-field device covering magnetic, electric, and RF. If someone recommends a Gaussmeter for home EMF testing, they’re only giving you one third of the picture. For whole-home awareness you want a meter that covers all three field types.
What is a broadband EMF meter?
A broadband EMF meter detects signals across a wide range of frequencies simultaneously, giving you a combined reading rather than isolating specific frequencies. Most consumer meters including the Trifield TF2 work this way. It’s useful for quickly identifying EMF sources, though it won’t tell you exactly which frequency is responsible for a reading. For that level of detail you’d need a spectrum analyzer like the one built into the GQ EMF-390.
Next step: Once you have a meter, check out my room-by-room home EMF testing guide to learn where to measure, what readings to expect, and which sources are typically highest in a normal home.
Disclaimer: I am not a doctor, engineer, or certified building biologist. Nothing on this site is medical advice. EMF research is ongoing and the science continues to evolve. The meters on this list are consumer tools suitable for home testing and general awareness. For professional assessment of your home or workplace, consider working with a certified building biologist. Affiliate links noted above. I earn a small commission on purchases at no cost to you.
