Electromagnetic field (EMF).
Telephones, refrigerators, microwave ovens, dimmer switches, power strips, and other electrical devices may be emitting an electromagnetic field above safe levels. To measure the EMF in various locations and from various electrical devices, I use a Personal EMF Alarm.
Radio Frequency (RF) and microwaves
Cell phones, towers, satellites, CB radios, radar, microwave oven, AM/FM, Wi-Fi, WiMAX, DECT, and other wireless devices may be emitting radio frequencies or microwaves above safe levels. Less EMF provides a selection of meters to measure radio frequency.