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The Extech 480823 EMF/ELF meter picks up electromagnetic field radiation levels from electrical appliances, wiring, power lines, paranormal activity. That's right, professional ghost hunters use the Extech EMF meter to detect fluctuations in EMF to track down rogue energy sources that could be the source of your paranormal activity.

Of course, that weird feeling you get in the basement could just be caused by high EMF emitted by your faulty wiring, as some people are affected by high levels of EMF which can produce feelings of dread and "being watched" when no one else is there. Then again you may have a level 6 aggressive poltergeist who's pissed you're down in the basement again!

Extech 480823 EMF Meter

Related: How to be a Ghost Hunter