Turn ratio measurement; transformation ratio polarity display; voltage measurement; primary current and secondary current measurement; voltage and current waveform display; phase between primary current and secondary current, phase between each current and voltage; frequency measurement; Active power, reactive power, power factor measurement; harmonic measurement. 1. Model No.:ETCR9570 2. Voltage Range:0V~600V 3. Current Sensor Range :0A~3000A/0A~600A/ 0A~10A 4. Turn Ratio Measurement Range: 1~9999 5. Phase Range: 0~360° 6. Hot Power Supply : Lithium battery 7.4V 5200mAH