Multifunction Three-Phase Phase Voltammeter can measure the voltage amplitude, current amplitude, voltage phase, current phase, the phase between voltage and current, frequency, power, active power, reactive power,harmonic and so on parameters at the same time. 1. Model No.: ETCR4400 2. Current Range: 0.001A-20A 3. Voltage Range: 2V-700V 4. Phase Range: 0°~360° 5. Harmonic range: 2 ~ 21 times 6. Power Supply : DC7.4V, 5200mAH rechargeable lithium battery