Does not give you a numerical readout, but it will tell you if high E-fields are present or not. Red LED lights when field is detected and audible tone gives indication of field strength and frequency.
Rotary switch permits adjustment of sensitivity.
Requires 2 AA batteries. Hz to 2 kHz, this handy meter does what no other meter in this price range can do. Two switchable ranges. Simple to use, just set the dial to the desired range and take readings. Operates on a 9V battery which is included.