1.test frequency:5Hz-1MHz 2.dual needle,soley and tracking measure 3.AC voltage:1mV-300V, max. 500V 4.dB measure: -80dB~+50dB MVT ... component assembly ensure minimum accuracy deviation. Measurement scopeVoltage: 1mV to 300V with 12 ranges 1mV, 3mV, 10mV, 30mV, 100mV, 300mVdB: -80 to +50dBdBm ... prior notice. MVT-172 Millivoltmeter,dual-needle, 5Hz-1MHz frequency,1mV-300V test voltage millivoltage