... Output voltage range: AC 0.0-300. Adjustable AC Power Source Specification:• AC-DC-AC frequency conversion technology • Digital wave ... MCU, which has high automation• High speed 12 bits A/D sampling technology, exactly display Voltage, Current, Power, Power factor, Frequency • ... this category:WP3005: Digital CC and CV DC Power Supply. This Variable DC power supply voltage output: DC 0.005~30.000V, ...