... keyboard and knob.High resolution.8 groups setting memory with 32 steps each.Data logging keyboard when power ... , 32 steps each groupBattery testing0.01mAH~4000AHInterfaceRS232, RS485, USB(option)ProtectionOver-voltage, over-current, over-power, over ... handle bars, software CDOption accessoriesRS232 adapter, RS485 adapter, USB adapter, Mounting rackPower source115V/230VAC±15%, 47~63HzDimensions(WxHxD ...