Features 【Secure Working】: Comes with built in over temperature, over current, output short circuit protection to ensures better safety. 【Reliable Using】: Has reasonable layout and beautiful appearance, the voltage regulator is very stable in light load conversion. 【Easy to Install】: Designed to have a light weight and a compact size, the easy installation can be quickly finished in minutes. 【Efficient Work】: Enables soft startup as well as constant volt output, the buck module has a high working efficiency up to 95%. 【Volt Converter】: This voltage buck regulator can convert DC 9‑90V to DC 12V or 5V with 3A constant current, simple and reliable. Specification: Item Type: Buck Converter Model: 9-90V to 12V buck module BMS99012V Material: ABS Function: For power supply buck conversion and constant current. Input Voltage: 9V-90V Minimum Voltage Difference Between Input Voltage and Output Voltage: 4V, when the output is 5V, the input is DC9V-90V, and when the output is 12V, the input voltage is DC16V-90V. Output Voltage: 12V/5V Maximum Output Current: 3A, that is, the constant current value is 3A, when the customized voltage is higher than 12V, the output current is less than 3A, the power is not recommended to exceed 30W, and both 12V and 5V can get to 3A. Typical Operating Frequency: 140KHz High Efficiency: Up to 95%, the smaller the voltage difference, the higher the efficiency. Operating Temperature: Industrial grade, -40℃ to +85℃.  Package List: 1 x Buck Converter Package List 1 x Buck Converter