Pick the right meter for the question
RF meters (Wi-Fi, cellular, Bluetooth) and low-frequency magnetic field meters (wiring, appliances, some smart meters) measure genuinely different things, and a meter built for one won't usefully read the other. Our meter selector tool matches a meter to your actual concern in a couple of questions.
Measure at the right point, not just in the room
Take the reading at pillow height, where your head actually rests for eight hours, not at waist height or from the doorway — field strength varies enough over a couple of feet that the measurement location matters as much as the meter.
Take a baseline before changing anything
Record the reading as it stands now, before moving a router or unplugging anything. Without a baseline, a “lower” reading after a change is a guess rather than a measured comparison.
Compare before and after properly
Use the same meter, same mode and same measurement point for the before and after reading — our measurement log is built to record matched pairs like this and export them, so the comparison is more than a memory of two different numbers.