AC 40A Ground Bone Tester Measuring Resistance from 1mO~650mO Connect with the GPT-9800/9900 series to become a multifunctional test or simultaneous test system 240x64 Ice Blue Dot Matrix LCD Function Key for quick selecting High intensity flash for Caution & Status indication PWM switching amplifier to enhance the power efficiency and reliable testing Max. 100 memory block for test condition setting. Remote terminal on the front panel for “start” and “stop” remote active Interface : USB device, Signal I/O and GPIB (optional)