Just turn it on, set it to magnetic or electric field detection, and begin! This Digital Combination Meter boasts several distinct advantages for a meter in this price range:

Wide frequency response: very flat (1 dB) from 16 Hz to 2000 Hz; useful from 5 Hz to 7000 Hz (3 dB)

Tremendous Sensitivity and Range: Magnetic: 1-2000 nT (0.01-20.00 mG); Electric: 1-2000 V/m

Accuracy: ±2% ±20 digits at 50/60 Hz

Audio sounder which sounds like a Geiger counter, increasing in intensity as the field strength increases

Easy to operate, easy-to-read display

Comes complete with manual, standard 9-Volt battery, and 2-Year Warranty