– The Simple Magnetic Field Probe 9khz-7ghz is a professional tool for detecting and measuring magnetic fields. – It is a half-screen magnetic field probe that can detect magnetic fields in the frequency range of 9 kHz to 7 GHz. – The probe is easy to use and can be used in various applications, such as EMI/RFI detection, magnetic field mapping, and gauss meter applications. – It is also a durable and reliable probe and comes with a one-year warranty. – The probe is also equipped with a number of additional features, such as a built-in LED flashlight, a carrying case, and a user manual.