Three instruments in one case: AC magnetic field on three axes, AC electric field, and radio frequency up to 6 GHz. The magnetic sensor covers roughly 40 Hz to 100 kHz, and a weighted setting scales the reading the way exposure guidelines do. A digital display carries a bar graph and a peak hold, so brief bursts do not vanish between refreshes. One 9 V battery lasts about twenty hours, and the whole thing is a bit heavier than a phone.
Paranormal teams like the rotary switch, which changes mode by feel in a dark stairwell, and the quick response of the magnetic channel. The catch is honest physics: the TF2 is built for man made AC fields, so wiring, dimmers and chargers set it off, and a room needs mapping before anything odd counts. Groups chasing slow static drift usually keep a natural EM meter beside it.
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