The EMF meter range for ghost hunting helps measure electromagnetic fields to identify devices producing high levels of radiation, allowing users to make informed decisions about limiting exposure. The detectors are associated with a number of locations where unexplained phenomena such as so-called hauntings have been reported. Runs on a single cell and reports EMF measurements in the 5 milliGauss range. Measure wide spectrum EMF from 50 Hz to 20,000 Hz, it can register cell phones within 2 feet. EMF levels are measured to prevent potentially harmful long-term overexposure to EMF. Convenient Push Up/Push Down Operation; Portable, Easy to Use, Rugged, Reliable, Responsive, Easy to Read LED Light Scale in Dark and Sunlight. Size: 14.3cm x 2.9cm x 5.3cm Colour: Black Packing list: 1pcs