Description: 【12A DC Step Down Buck Converter】:Module properties: non isolated step down module (BUCK). Input voltage: 4.5-30V input voltage please do not exceed 30V. Output voltage: 1.25-30V continuously adjustable. Output current: 0-12A 100W Enhanced heat dissipation can reach 200W. 【Power Supply Module Features】:Working temperature: -40~+85 degrees. Working frequency: 300KHz. Conversion efficiency: peak 95% (efficiency is related to input and output voltage, current, and differential pressure). Short circuit protection: yes (current limit 14A), please try not to short circuit. Over temperature protection: Yes (automatically shut down the output after over temperature). Input reverse connection protection: none, (if necessary, please connect a diode in series with the input). 【Installation and Wiring】:Adjustable regulator module, Installation method: 4 pieces of 3mm screws. Wiring method: terminal block, no welding, V-IN is input, V-OUT is output, and the module with shell is output by welding wire. 【Applications】:This voltage step down module can be used in step down fields where the input voltage is higher than the output voltage, such as batteries, power transformers, DIY adjustable regulated power supplies, 24V car notebook power supplies, car LED light strip power supplies, industrial equipment step down, 12V to 3.3 V, 12V to 5V, 24V to 5V, 24V to 12V, etc. 【Module Size】:length 6cm/2.36inch,width 5.1cm/2.01inch,height 2.2cm/0.87inch. Size Chart: 6cmx5.1cmx2.2cm/2.36inchx2.01inchx0.87inch Package Includes: 1x DC DC Buck Converter Note: Please allow slightly errors due to manual measurement and different monitors.