Mạch Nguồn Xung 220V to 12V Precision 12V 450mA (5W) power Supply Module Bare Board, LED Voltage Regulator Module AC 220V to 12V Mạch Nguồn Xung 220V to 12V. Precision 12V 450mA (5W) power Supply Module Bare Board, LED Voltage Regulator Module AC 220V to 12V