Kqiang LED EMF Meter Magnetic Field Detector Ghost Hunting Paranormal Equipment Tester Portable Counter Portable EMF Magnetic Field Monitor 5 LED Gauss Meter Features: The EMF Meter Range for Ghost Hunting helps measure the electromagnetic fields to identify appliances that produce high-level emissions, allowing users to make informed decisions about limiting exposure. The EMF Magnetic Field Detector is a great for home inspections of EMF levels as well as finding erratic sudden EMF field spikes from unexplained possible spirit activity. It is super easy to use. Just push the button to turn it on. Look for increases in EMF levels with the colored led lights. Perfect for use in the dark. Measure wide spectrum of EMFs from 50 Hz up to 20,000 Hz, & it can register a cell phone that is within 2 feet. The Five Scales: The 1st Light detects a Normal EMF field, what is always around us.The range is between 0 to 1.5 mG The 2nd Light (GREEN) detects a Low Level EMF,which range is between 1.5 to 2.5 mG. The 3rd Light (YELLOW) detects a Mid Level EMF in the range between 2.5 to 10 mG. The 4th Light (ORANGE) detects a High Level EMF field in the range between 10 to 20 mG The 5th Light (RED) detects an Extremely High EMF Range of 20+ mG Specification: Material: ABS Accuracy: +/- 5% Detection Range: 0 to 20+ milliGauss Detection Frequency: 30 - 20,000 Hz Battery: 1x9V batteries Package includes: 1xEMF Magnetic Field Detector