ED-15SA - Electrosmog Field Strength Power Meter, Build-in 2.4GHz Band Spectrum Analyzer Operation mode: Broadband power meter and Spectrum analyzer mode Frequency range: 100MHz to 3.0GHz useful range (broadband mode) 2.4GHz to 2.485GHz band (spectrum mode) High sensitivity: -55 dBm to 0 dBm (broadband mode) -100dBm to -10dBm (spectrum mode) Peak Power density: 0.0018mw/m-sq to 0.58 w/m-sq (broadband mode) Dynamic range: 60 dB (broadband) 90 dB (spectrum mode)