High-precision display: 5-digit/6-digit display with one key switch, maximum resolution 0.00001, real-time monitoring of subtle changes in voltage, current, and power during charging. It supports the detection of USB-C data cable with E-Maker chip. The PC interface provides independent power supply. The chip of E-Marker and DASH cable can be easily read by connecting the data cable. It can also detect the weak current of the original data cable when there is no load