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Common Types of EMF Guide

Writer's picture: Safer EMFSafer EMF

Updated: Oct 14, 2024


The four common types of Electromagnetic Fields (EMFs) we measure at high levels in homes are:


  1. Radio-Frequency Radiation (RFR) / Wireless Radiation

  2. Magnetic Fields

  3. Electric Fields

  4. Dirty Electricity



Radio-Frequency Radiation (RFR or wireless radiation) are radio waves that emit from radio and television, microwaves, 3G/4G/5G, Wi-Fi, Bluetooth, radar and smart devices.


Common sources include:


  • WiFi and WiFi boosters or extenders

  • Neighbour WiFi and wireless devices

  • Mobile phone base station transmitters - 3G/4G/5G

  • Small cell mobile phone antennas

  • NBN satellite & fixed wireless

  • Mobile phones

  • Laptops

  • Tablets

  • Printers

  • Speakers

  • Gaming consoles and remote control toys

  • Ear buds and wireless headphones

  • Hearing aids and wireless medical devices

  • Smart watches

  • Sleep tracking rings

  • Mouse and keyboard

  • Smart appliances like TV's, Apple TV's, TV remotes, sound bars, washing machines, fridges, air-conditioners, robot vacuums, air purifiers, coffee machines, etc

  • Security systems

  • Baby monitors

  • Solar panel monitoring systems and inverters

  • Smart meters

  • Cordless DECT phones

  • Microwave ovens

  • Internet of Things (IOT) devices

  • Vehicle Bluetooth

  • Vehicle onboard sim to mobile networks, like in a Tesla


RFR is measured in microwatts (uW/m2) or milliwatts (mW/m2) using EMF Meters. 


EMF Meters that measure RFR including low band 5G (up to 8GHz):







EMF Meters that measure RFR from high band 5G (20 to 40GHz):




Magnetic Fields are created by imbalances in active and neutral electrical wiring, wiring errors or stray current.


Common sources include:


  • Powerlines

  • Electrical appliances

  • Induction cooktops

  • Electrical switch board and solar inverters

  • Vehicles

  • Stray current on water pipes

  • Electrical wiring errors

  • Metal house framing


Magnetic Fields are measured in Milligauss (mG) or Nanoteslas (nT) using Gauss or Multi EMF Meters


EMF meters that measure magnetic fields:







Electric Fields are created by the current from unshielded electrical wiring.


Common sources include:


  • Mobile phone chargers

  • Extension leads and power boards

  • Electrical wiring

  • Electrical switch board

  • Bed-side lighting

  • Electrical appliances and charging cables, including laptops, PC's and display screens

  • Reclining lounges


Electric fields are commonly measured in volts (V/m) using Volt or Multi EMF Meters.


EMF meters that measure magnetic fields:






Dirty Electricity (DE) is a deviation from the standard 50 Hz electrical wave in wiring, which causes spikes in electrical wiring and devices.


Common sources include:


  • Dimmer lights

  • LED lighting

  • Solar panel inverters

  • Variable-speed motors, like inverter air conditioners

  • Electric vehicle charging

  • Neighbour high DE devices like solar panel inverters


DE is commonly measured in millivolts Peak-to-Peak (mVpp) using an Oscilloscope or Power Line Meters.


Meters that measure Dirty Electricity:



Safer EMF measures all 4 sources of EMF during an onsite consultation. We recommend and install effective solutions to reduce your exposure. We also offer phone or video consultations. Learn more about our Services or visit our Shop to hire or purchase meters and shielding products that we use and recommend.


Stay Safe


Safer EMF








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