Features: The Converter Module features automatic / conversion, supporting 1.8V 5.5V input (e.g., lithium batteries/USB) and delivering 3.3V/4.2V/5V outputs with up to 1.3A current for in embedded systems. Engineered with advanced low circuitry , this compact PCB module ensures stable power delivery for sensitive electronics while minimizing energy loss and heat generation. Ideal for electronics hobbyists, developers, and engineers requiring regulation in microcontroller projects, portable devices, or battery powered applications. integrates setups, digital sensors, and USB driven prototypes where space constrained designs demand clean, adjustable power supplies. Its plug and play wiring simplifies integration across electronics, robotics, and mobile gadgets, making it a must have for optimizing in smart home or wearable projects. Specifications: []: PCB [Product Size]: 26.6x18.2mm [Product Weight]: 3g [Input ]: 1.8~5.5V [Output and current]: 3.3V1.3A/4.2V1A/5.0V0.9A [Switching Frequency]: Approximately 2.4MHZ [Working Mode]: Regular/Power Saving Mode Prototyping: Provides flexible power in a variety of prototype designs. Package Includes: Automatic step-down converter module, packaging bag note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.