Feature: 1. The range of ghost hunting EMF meters help measure electromagnetic fields to identify devices that produce high level emissions, allowing users to make informed decisions on limiting exposure . 2. The detectors have been associated with locations where unexplained phenomena such as suspected hauntings have been reported. The K2 Ghost Hunting Detector operates on a single battery, and reports EMF measurements in five milliGauss ranges. 3. Measures a broad spectrum of EMFs from 50 Hz to 20,000 Hz, and can record a cell phone within 2 feet. 4. Measures EMF level to protect against potentially harmful long-term overexposure to EMFs. Convenient push/pull operation; Portable, easy to use, rugged, reliable, super sensitive with an easy to read LED light scale in the dark and sunlight 6. Specifications: Accuracy: /- 5%, Detection range: 0 to 20 milliGauss, Detection frequency: 30 - 20, 000HzEasy to read multi-segment LED display5% accuracy at 50-60HzSize : 14.3 x 2.9 x 5.3cmBatteries : with 1 x 9V batteryFive scales: The 1st light detects a normal EMF field, which is always around us . The range is between 0 and 1.5 mGThe 2nd light (GREEN ) detects a low level EMF, whose range is between 1.5 and 2.5 mG . The 3rd light (YELLOW) detects a medium level EMF in a range between 2.5 and 10 mG. The 4th light (ORANGE) detects a high level EMF field in the range between 10 and 20 mGthe 5th light (RED ) detects an extremely high EMF range of 20 mGincludes :1 x EMF Magnetic Field Detector