What do K2 meters detect? (EMF meters and ghost hunting)

Last time, I wrote about the basics of EMFs: high versus low and medium-frequency EMFs, etc. Check that out if you haven't already, because I'll be building on that today. While doing that research, I found myself wondering what frequencies popular EMF meters detect, since even visible light is an EMF. So let's take a look at K2 meters, one of the most popular EMF meters in the paranormal. (You know the type; the recognizable one with an arc of colorful LEDs.) K2 (aka K-II) meters GhostStop

K2 Electromagnetic Field Emf Gauss Meter Hunting Detector Portable Magnetic Field Detector 5 Led Gauss Meter Blue

Emf Meter Magnetic Field Detector With 9v Batteries Ghost Hunting Paranormal Equipment

K2 EMF METER at Rs 2500, EMF Detector in Indore

New Magnetic Field Detector K2 EMF Meter KII Ghost Hunting Paranormal Equipment

K2 Electromagnetic Field EMF Gauss Meter Radiation Detector Portable EMF Magnetic-Field Monitor 5 LED Gauss Meter

Fuse Boxes and K-2 Meters: Ghost Hunting Tip No.2

Magnetic Field Detector K2 EMF Meter KII Ghost Hunting Paranormal Equipment

Electromagnetic field radiation test has 5 LED indicators representing different radiation values, dark green:0-1.5mgas; Green:1.5-2.5mgas;

Magnetic Field Detector K2 EMF Meter KII Ghost Hunting Paranormal Equipment

Paranormal Detection Gear: Reveal Supernatural Spirits With the Ghost Hunter EMF Meter KII-Deluxe

LED EMF Meter Magnetic Field Detector Ghost Hunting Tester Paranormal Equipment

KII K2 Electromagnetic Field EMF Gauss Meter Ghost Hunting Detector Portable EMF Magnetic Field Detector 5 LED Gauss Meter

Emf Meter Magnetic Field With 9v Batteries Ghost Hunting Paranormal Equipment

K2 EMF Meter – Ghost Hunters Equipment by GHOST AUGUSTINE