Technical Specifications: Manual Switch between 115V and 230V Input ,+ / - 10% adjustable output voltage. Auto on/off cooling fan. High Efficiency, Low Temperature,High reliability. LED indicator for power on. Built-in EMI Filter. Gross Weight: 2 lb Color: Silver Power for 3D Printer , ham Radio Transceiver , Car Subwoofer amp Audio Amplifier , RC LiPo Chargers and LED Strips.