Because it can sometimes detect the electrical presence of a person, this versatile meter can even be used in paranormal studies. Sensitive to changes in electric fields of as little as 3 V/m with a full scale deflection at 1000 V/m. Will measure magnetic field changes as small as 0.5% of the Earth's magnetic field (2.5 mG) and as high as 100 microtesla (1000 mG). RF sensitive down to 0.01 mW/cm², with a full needle deflection at 1 mW/cm² over the frequency range of 100 kHz to 2.5 GHz.. 9v battery included. One year manufacturer's warrantee.
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