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See how Much Radiation is in Your Home and Office!
olmlmo 4 in 1 EMF meter measures magnetic, electrical, and radiofrequency radiation. It has the functions required for fast and accurate testing of electromagnetic fields (EMF) temperature (excluding testing nuclear radiation).
olmlmo EMF Meter: Perfect for Every User and Need!
This emf meter suits both amateurs and enthusiasts with simple controls and clear displays. Perfect for ghost hunting and educating about electromagnetic fields, fun with learning for all ages. NOTE: The 4-in-1 EMF meter does not measure nuclear radiation or magnetism, only active electronic fields.
Andrew Jones
Reviewed in the United States on February 15, 2025
Pretty Cool Frequency Detecting Multitool...There are so many features packed into this device and they have all proven to be quite responsive and accurate..If you are searching for the source of magneticelectrical interference, this will help you find it. If you want to measure the level of interference, this will do it..If you just need to know some environmental values like temperature, this can do that as well...I really havn't learned all it can do, but it sure is fun to play with...
Amy lynn
Reviewed in the United States on January 2, 2025
I recently bought this EMF meter, and I’m really impressed with its versatility! It’s a great tool for measuring electric fields, radio frequency fields, temperature, and magnetic field strength. I’ve used it to check radiation levels from 5G cell towers and WiFi signals, and it gives me peace of mind knowing how much exposure I’m getting. I also took it along for a ghost hunting session, and it worked like a charm in detecting changes in the environment. The rechargeable feature is super convenient, and it’s easy to use. Highly recommend for anyone interested in EMF detection!
Uncle J's Opinion
Reviewed in the United States on December 28, 2024
For me, probably an electrician. I've gotten into amateur radio lately and got this to help measure EMF and radio frequency intensities. Although they said it may can detect ghosts, I haven't had any concerns regarding them but, I do have a house with old knob and tube wiring, and this can easily detect the wires inside walls. I'm consistently setting off the alarm, but I'm confident it's the wiring and/or the electronics I have running in the rooms. It was also able to detect the neodymium magnets I have on my fridge, which I was impressed with. The thermometer only measures ambient temperature so don't expect it to operate like a laser thermometer.So far, I don't have any issues with this meter. But then again, I'm new to amateur radio. I intend on using this more in the future as I improve my skills. I'll update this review if I come into anything that it fails on; or to compare it to a more professional unit if I buy one. But the simple testing I've done, I'm pleased with this and would recommend to anyone looking for a combination EMF meter.
gpslouis
Reviewed in the United States on December 17, 2024
This EMF meter is highly effective for measuring the strength of low- and high-frequency RF fields as well as dynamic magnetic fields.Low-frequency RF fields (e.g., 60 Hz power line fields) are measured using the ELEC button.High-frequency RF fields (e.g., HF, VHF, UHF, and microwave) are measured with the RF button.Magnetic fields are measured using the MAG button, but note that only dynamic (changing) magnetic fields are detected.For static magnetic fields, the meter will read zero unless you move either the meter or the magnet. This is by design, not a flaw. Oscillating magnetic fields, such as those from a spinning magnet, are measured accurately.The meter is sensitive enough to detect nearby magnetic fields but cannot measure the earth’s magnetic field. For that, use a compass or a smartphone app with a built-in magnetometer.The temperature function is inaccurate, consistently reading about 6°F higher than the actual temperature (tested against a calibrated Fluke 179). I don't consider that to be a major flaw because the purpose of this instrument is to detect and measure electrical and magnetic fields.In testing, the RF signal strength display worked well even below its stated 20 MHz minimum range, detecting signals down to 3.5 MHz. I also tested at 1.9 Mhz but the unit did not respond. I don't consider that to be a flaw because it definitely detects RF fields even well below its stated range. The accompanying photo demonstrates RF measurement next to a handheld amateur radio transmitting at 146.46 MHz.As with most meters in this price range, this meter lacks adjustable sensitivity or an attenuation function. For extremely strong RF fields, such as those near a 10 kW transmitter antenna, you may need to create a shield to reduce the signal.The display is large and easily readable in most lighting conditions, but gets washed out in sunlight.The internal battery is a 1000 mAh lithium-ion rechargeable rectangular flat cell. It gets charged by plugging a common 1000 mA or greater USB charger into the side of the meter. A USB charging cable is included but no USB charger is included. The voltage, 3.7 volts, is stated on the battery. There is no battery part number mentioned in the instructions. Although the battery cover states that the user should not attempt to change the battery, the battery appears to be easily replaceable by people with electronic repair skills. The battery has a very short pair of wires with a connector that plugs into a connector in the unit.A detailed user manual and a sturdy case are included with the unit.While not a lab-grade instrument, this meter is an excellent tool for most home and professional applications, offering reliable performance at a reasonable price.
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