It is used to test and learn electromagnetic radiation situation indoor and outdoor. 1 Electromagnetic Radiation Detector. Alarm Threshold: 40mG, 0.4μT. Large & clear LCD display of the values for easy reading.
This is easy to use once reading the short list of instructions carefully. It gives accurate radiation levels when put close to the item being tested. But, it doesn't seem to pick up radiation from atmosphere. Maybe there would need to be a lot of it first. Such as that given off from Five G frequencies.