DROK&reg ; DC-DC Waterproof Boost Converter 3A Step Up Voltage Regulator Module 12V to 24V Car Power Supply Voltage Transformer Input 10V-20V with 4 Wires Waterproof and non-isolated 72W boost converter module for converting 12V to 24V Input Voltage is 10v-20v and output Voltage is 24V, output current is 3A (rated working current) Over Voltage protection, over temperature protection, over current protection, and automatically recover after removing obstacles It has 90 percent converting efficiency and it is also dust-proof, Shockproof, suitable for all kinds of harsh environments Its dynamic response speed is 5 percent 200US, please lower the power or enhance heat radiation when temperature over 40