Extech 480846 8GHz RF EMF Strength Meter provides the highest frequency radiation measurement in the 10MHz to 8GHz frequency range. Extech 480846 8GHz RF EMF Strength Meter is 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) and microwave leakage.