1. Instant response to electromagnetic field fluctuations and spikes. 2. Easy to read LED cursor in dark and sunlight. 3. Portable, easy to use, rugged, reliable, responsive and radiation resistant. 4. UV-responsive color labels 5. For paranormal wave research and general EMF detection use. 6. EMF flow meters are often used during ghost hunting and also for personal safety to identify potentially harmful high EMF radiation. The reliability and quality of EMF flow meters in paranormal investigations. This makes EMF meters a tool for detecting psychic activity and finding potentially harmful high EMF levels in the home or work environment 7. The EMF meter can be used indoors or outdoors to measure any electrical device or power line. 8. There are 5 LEDs, each representing a range of field strengths, as follows. -Green - "normal" zone - normal background magnetic field. 0 to 1.5 milliGauss -Green - "low" zone - low level magnetic field. 1.5 to 2.5 milliGauss -Yellow - "caution" zone - moderate magnetic field. 2.5 to 10 milliGauss -Orange - "high" zone - high intensity magnetic field. 10 to 20 milliGauss -Red - "warning" zone - very high magnetic field. 20+ milliGauss 9. Material: ABS housing 10. Power supply: 1 x 9V battery (not included) 11. Dimensions: 14.3 x 5.3 x 2.2cm