When to UseMAG fields are usually emitted by motors, appliances, wiring and power lines. LEC fields come from power lines, lights, wall outlets, electrical switches, and ungrounded appliances. RF fields are often found near transmitting cell phones and wifi routers, cell phone towers, microwave ovens, smart meters, wireless landline phones or walkie talkies, and radio/tv stations.
Display & Audio If you're looking to accurately determine the actual EMF radiation levels of certain items, the field indicator is a must-have. On the other hand, if you're simply trying to move around your home and locate EMF radiation sources, the audio feature is truly impressive. Using the audio output, you don't even need to glance at the display. The Audio and Light buttons can be found in the battery compartment.
Package List 1 X EMF Meter ( 9V alkaline battery is not included ); 1 X user manual.