HF-B8G

Was able to tell if there was a difference in the interferences I was experiencing based on what technology was on around.

Parece ser, que tiene una gran inestabilidad, en la medición, de eléctromagnetismo, a pesar del botón de estabilidad, e imprecisión, en la de frecuencias.

Good equipment if you have high power lines nearby.

I appreciated how this came with a calibration certificate. Also to note I gave an accuracy of 4 starts because the readings become unreliable and appear to increase as the battery goes below 50 percent charge. With a fully charged battery its very repeatable in its measurements.

Everywhere you place this, it detects 0 almost, meaning its sensitivity is ultra-low versus other amazon meters, and if you use some cell phones it will say something like 90 mw/m2 or something, it's absolute trash. Get a GQ-EMF390 or the Safe Sound meter. This made-in-Taiwan piece of crap only has a nice box to go with it, accuracy is nonexistent.

Easy to use and set up.

Very accurate but doesn’t pick up 5g. Sometimes the buttons don’t work properly

I have a huge problem - a neighbor maliciously propagating emfs in my direction. I have purchased three meters - the MG-300, AF-3500 and HF-B8G. So far all of the meters have revealed very high levels of low and high frequencies. I'm in the learning process of using the x,y,z axis function to generally locate the source. I have been living with emf levels as high as 18,000 mV/m and low frequency levels of 76.00 mGs. I'm on my own here and could use some expert advice. I'm slowly proceeding on a learning curve.