Features: Two large aluminum heat sinks ensures a better heat dissipation and more stable performance. Five 470uf/35V high frequency low resistance capacitors in parallel special for switch-mode power supply lower output ripple. The 23mm large magnet and 1.0 copper wire provides high efficiency work. LED indicator light on board make work state more intuitive. TVS diode can prevent voltage spike from chip breakdown and ensures module safety. Two 50V/MLCC patch capacitors and high frequency low impedance electrochemical capacitors lower output ripple. Four 3mm screw holes are convenient for installation. Widely used for storage battery, power transformer, DIY adjustable regulated power supply, industrial equipment, 12V to 3.3V, 12V to 5V, 24V to 5V, 24V to 12V, etc. Specification: Type: Non-isolated step-down module (BUCK) Input Voltage: 5-30V (input voltage should not exceed 30V) Output Voltage: 1.2V - 30V continuously adjustable (default output 5V) Output Current: 0-12A; 100W (can reach 200W if enhancing heat dissipation) Operating Temperature: -40℃ to +85℃ Frequency: 300KHz Maximum Conversion Efficiency: 95% (Efficiency is related to input/output voltage, current and voltage difference) Short Circuit Protection: Support (limit current is 14A, please try to avoid short circuit) Over Temperature Protection: Support (automatic shut off output) Reverse Input Protection: No, please connect to a diode in series at input if needed Wiring Method: V-IN: Input V-OUT: Output Weight: 75g(approx.) Tested Data: Input 12V, output 5V/10A, Efficiency is 81%; Input 12V, output 5V/6A, Efficiency is 86%; Input 24V, output 12V/8A, Efficiency is 91%; Input 24V, output 19V/6A, Efficiency is 94%. Package Includes: 1 x Module 1、Two large aluminum heat sinks ensures a better heat dissipation and more stable performance. 2、Five 470uf/35V high frequency low resistance capacitors in parallel special for switch-mode power supply lower output ripple. 3、23mm large magnet and 1.0 copper wire provides high efficiency work. 4、LED indicator light on board make work state more intuitive. 5、Two 50V/MLCC patch capacitors and high frequency low impedance electrochemical capacitors lower output ripple.