K2 Meter EMF Meter High Accuracy Electromagnetic Field Radiation 9 volt Battery Powered with a better design for easy battery replacement. Battery not included Home Inspections Ghost Hunting The EMF meter adopts premium material and advanced technology, with high sensitivity, and it can accurately measure wide spectrum EMF from 50 Hz to 20,000 Hz to prevent potentially harmful long-term overexposure to EMF. [With LED Light] Magnetic field detector reports EMF measurements in 5 scales to help you understand the electromagnetic field easily. The LED light will turn dark green when the EMF is 1-2.5mG, green for 2.5-5mG, yellow for 5-10mG, orange for 10-20, red for 20+mG, easy to read during day or night. According to related reports, unexplained phenomena is linked to magnetic fields, such as alleged ghosts. This EMF meter can help you detect magnetic field, which is super easy to use. Just turn it on and it will detect automatically. You can look for increases in EMF levels with the colored LED lights, perfect for using in the dark. It's great for home or industrial inspections of EMF levels. Thanks for looking. In Hand, Ready to Ship