Product Description1. The EMF detector for ghost hunting helps measure electromagnetic fields to identify devices that produce high emissions - Allows users to make informed decisions about limiting exposure.2. The detectors have been associated with locations where unexplained phenomena have been reported as ghosts. The K2 Ghost Hunter Detector is powered by a single battery - Reports EMF measurements in the range of five milligauss.3. Measures a wide spectrum of electromagnetic fields between 50 Hz and 20,000 Hz - It can play a mobile phone that is within a distance of 60 cm.4. Measure the electromagnetic level to protect yourself from overexposure to electromagnetic fields that can be harmful in the long term.5. Convenient to use - One-button operation to turn on and off - Portable - Robust - Reliable - Highly responsive with LED light scale that is easy to read in the dark and sunlight.