... range: AC 0.0-300. Adjustable AC Power Source Specification:• AC-DC-AC frequency conversion technology • ... A/D sampling technology, exactly display Voltage, Current, Power, Power factor, Frequency • Zero output impedance, equivalent resistance ... Power Meter (Basic Model).UI2010: Digital Power Meter (Harmonic Analyzer Model).UI2012: Digital Power Meter (DC & AC power meter). Adjustable AC Power Source ...