VLF means Very Low Frequency and is identical technological innovation Utilized in detectors created for cash, jewelry, and relics. VLF detectors broadcast at frequencies measured in kilohertz ranging from 3 kHz to 70 kHz. Allow me to share 5 reasons why you could possibly pick a VLF around a PI https://168.exodirectory.com/index.php?topic=267777.new#new