Features: ※ 500VA AC Test Capacity※ 240x64 Ice Blue Dot matrix LCD※ Sweep Function for DUT characteristic analysis※ Insulation resistance measurement up to 50GΩ(GPT-9903/9904)※ Manual/Auto Mode※ Function Key for quick selecation※ High intensity flash for caution & Status indication※ Safety INTERLOCK function※ Zero Crossing Turn-on Operation※ Controllable Ramp-up Time※ True RMS Current Measurement ※ High resolution: 1uA for measuring current, 2V for setting voltage※ PWM amplifier to enhance the power efficiency and reliable testing ※ Max. 100 memory block for test condition (step) setting. And each step can be named individually.※ Remote terminal on the front panel for “start” and “stop” control※ Rear panel output available※ Interface : RS-232C, USB device, Signal I/O and GPIB (optional)