Voltage Ranges: 1 Millivolt to 100 Volt ( Full Scale ) Lowst useful reading 300 microvolts Six direct ranges - 1 mV , 3 mV 10 Mv  Six ranges this 50dB adapter (  Supplied ) 300mV , 1V, 3V,10V,30V,100V ( full scale ) 

Accuracy ( As measured with 5 ohm treminating BNC Adapter ) 20 kHz to 520 mHz : 1dB 520 MHz to 1000MHz : 1.5 dB. 1000MHz to 16000MHz : 3.0dB Usable to indicator to 3 GHz

*Probe Input Impedence : 1000,00 ohms in parallel with 20pf

50dB Adapter Input Impedence: 1.2 pf

Indication: Calibrated in RMS and dBm True RMS reading on bottom 4 scales

( to 30 mV direct , 10 V with Adapter

Power requirements: 220/240 or 110/120V, 50/60Hz as chosen by transformer taps. Also operable from 12V DC .. Negative ground automotive supply.

* Probe missing, but specs are including them as a reference for information.