Power supply module **Mitsubishi A1S-61P** is an important part in programmable controller systems. (PLC) was the MELSEC A series of Mitsubishi company, which was designed to supply the voltage required for industrial control systems. This module received an AC power input between 100 and 240 volts with a frequency of 50/60 Hz and produced a 5 volts DC output with a current of 5 amps. Since this model has been discontinued, it is recommended to find an alternative or use newer similar models for current projects.