1. EMF detectors for ghost hunting help measure electromagnetic fields to identify devices producing high levels of emissions - allowing users to make informed decisions about limiting exposure. 2 . Detectors have been associated with places and unexplained phenomena are reported as ghosts. The K2 Ghost Hunter Detector operates on a single battery - reporting EMF measurements in the 5 milliGauss range. 3. Measure broad-spectrum electromagnetic fields between 50Hz and 20,000Hz - it can record cell phones within 60cm. 4. Measure EMF levels to protect yourself from potentially harmful long-term EMFs. 5. Ease of use - One-touch operation to open and close - Portable - Robust - Reliable - Highly responsive with LED light, easy to read in darkness and sunlight.