High-Voltage Adjustable Regulator Module, Based on TL783 IC. Output Adjustable From 2V to 120V. Maximum Output Current 700-mA. High-Quality Components Designed. If input DC voltage greater than 50V, or AC input greater than 35V, may be life-threatening, if you aren't electronic technician, do not buy. Before buy, please read TL783 IC Datasheet and Module Specification, if you not understand, do not buy.