This is a EMF meter that was designed for paranormal research. It give you light and audible alarms when it is detecting anomalies. This allows you to track down a source with the increasing intensity of the alerts. It is also shielded so you get less outside interference and false readings.

Features
EMF sensor with lights visible all around the unit
Sound alert that varies with proximity of the EMF detected
Highly sensitive EMF detects even small changes
Quality detection fortified from most interference
Detects NATURAL magnetic and man-made EMF
Ergonomically built for comfortable carrying with grip texture
All red lighting used to preserve night vision
Lighted on/off power switch and power indicator for finding it in the dark
Balanced to sit upright on its own for viewing in 360 degrees
Tripod mountable for flexibility in various applications