【POWER SWITCH AND BREADBOARD INCLUDED】DIY Power Module comes with a dedicated power switch and a breadboard. Create A Versatile Power Supply With This DIY Soldering Kit. Offering 3.3V, 5V, 12V, And Adjustable Voltage Outputs, It's Ideal For Experiments, Testing, And Hands-on Learning In Electronics 【MANUAL IN PAPER】The included paper manual with the package provides you with color-printed soldering steps and detailed textual instructions, ensuring you can clearly understand every detail of the operation. DIN Rail Mount LM2596 XL2596 ADJ Power Supply Board DC-DC Step-Down Adjustable Voltage Buck Converter 3.3V 5V 12V Aazon.co: DIY Power Odule Soldering Kit, PEENOL L2596 Universal 1.5V/3.3V/5V/12V/Adjustable DIY Power Supply Kit 【ADJ Output Display】Power supply module features a digital display that clearly shows the voltage values when adjusting the output voltage. Dual-Polarity Power Output: DIY Power Module features multiple power outputs, including 3.3V, ±5V, 12V, and adjustable voltage options. It can simultaneously meet the power supply needs of various electronic devices and projects It can simultaneously meet the power supply needs of various electronic devices and projects. 【Dual-Polarity Power Output】DIY Power Module features multiple power outputs, including 3., 3V, ±5V, 12V, and adjustable voltage options.