Features Portable type, small size design Overload protection 3 sets output: 0~32V/0~3A x 2 + 5V/3A Parallel: 0~64V/0~3A or + 32V ~ -32V/0~3A Series: 0~32V/0~6A 3 digits, 4 sets LED display, Green is display for voltage, Red is display for current, easy to read, no mistakes.