Features: Six high speed operation modes: CC,CR,CV,CW,CC+CV,CR+CW Over current, over voltage, over power, over heat, polarity reversed protection High-luminance VFD screen with two lines& four channels display Intellegent fan system fan will be automatically initiated according to the temperature Soft start time setting, carrying the power supplier according to the voltage value set Battery testing and short-circuit function Available of dynamic testing and rising edge and falling edge setting Supporting external trigger input and output External current waveform monitor terminal Supporting remote voltage compensation and multidata storage Power-on-self-test, software calibration and standard rack mount Communication mode: GPIB/RS232/RS485/USB. M9712 ( 0-30A/0-150V/300W)