EMF Detector

The Electro Magnetic Field Detector is a highly sensitive tool.
The scale on the meter indicates the ELF strength in a measure called "milliGauss", which is the common unit of gauging how hard the field is pushing the electrons.
A reading of 1 is the lowest, 5 is the highest or strongest.
When the device detects a field of 2.5 milliGauss or more the lights will flash and the unit will beep.

• electromagnetic field (EMF) meters, devices intended to measure geomagnetic storms, and which measure changes in EMF that might corroborate haunting
activity.