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Extech 480846: 8GHz RF Electromagnetic Field Strength Meter

Monitors high frequency radiation in the 10MHz to 8GHz frequency range

This 480846 RF EMF Strength Meter monitors high frequency radiation in the 10MHz to 8GHz range. Ideal for mobile phones, cell phones, base stations, locating RF hotspots, wireless network (Wi-Fi) RF detection, RF “Electrosmog” detection, microwave leakage, and wireless communication applications (CW, TDMA, GSM, DECT). Meter features non-directional measurement with 3-channel (triaxial) measurement probe, Max Hold and Average functions, and manual store/recall of up to 99 data sets. In addition, there is an audible alarm with a user-selectable threshold. The meter comes complete with a 9V battery and carrying case.



  • For electromagnetic field strength measurement including:
    • Mobile phone base station antenna radiation
    • RF power measurement for transmitters
    • Wireless LAN (Wi-Fi) detection/installation
    • Wireless communication applications (CW TDMA GSM DECT)
    • Microwave leakage


Specifications Range
Sensor Type Electric Field
Frequency Range 10MHz to 8GHz (optimized for 900MHz, 1800MHz, 2.7GHz, 3.5GHz & 8GHz)
Units of Measure mV/m, V/m, μA/m, mA/m, μW/m2 , mW/m2 , W/m2 , μW/cm2 , mW/cm2
Measuring Ranges 20mV/m to 108.0V/m
53μA/m to 286.4mA/m
1μW/m2 to 30.93W/m2
0μW/cm2 to 3.093mW/cm2
Resolution 0.1mV/m, 0.1μA/m, 0.1μW/m2 , 0.001μW/cm2
Audible Alarm Adjustable threshold with On/Off
Memory Manual store/recall of 99 sets
Dimensions 2.6×2.4×9.7″ (67x60x247xmm)
Weight 8.8oz (250g)