Cảm biến đo điện từ trường Gigahertz ES-NFA
Frequency range:0 HzMeasurement range:1 - 10.000 V/mPrecision:+/- 10% (50% rH, 20°C)Audio analysis:Acoustic signal proportional to the field strength (with "Geiger-counter effect", switchable)Power supply:via NFA