Smart meter radiation is the radio frequency, RF, waves emitted from the smart meter used to transmit its data to the utility companies. EMF, electromagnetic field, is the field generated by the RF wave. The electromagnetic waves are in the RF range, which is oscillating at about 900 to 2,400 million times per second, (900 MHz and 2.4 GHz). This is similar to the frequency range used in WiFi, cordless phones and cell phones. These devices are regulated by the FCC and transmit at much lower powers. Smart meters run at fairly high power so they can transmit up to 25 miles or so.