Introduction - If you have any usage issues, please Google them yourself
Display 232 pairs of computer communication, host a power-host 6 8:00, and the printer to print the English name of the Communication University of China, press S1 shows the voltage value, rotate the button changes the voltage value, the display shows the corresponding voltage value, press S2 key Print voltage value. Slave on a power display 6 8:00, and consistent voltage and host