This is a DC-DC buck converter module that converts input voltages from 3.2V to 35V down to output voltages from 1.25V to 35V, with a maximum output current of 3A. The input voltage must be at least 1.5V higher than the output voltage for stable operation. Conversion efficiency reaches up to 92%. For continuous operation, it is recommended to keep the output current below 2.5A. If the output power exceeds 10W (e.g., over 2A at typical voltages), adequate heat dissipation is required. Type: Power Module Model: LM2596 Step-Down Module Input Voltage Range: 4V–35V Output Voltage Range: 1.23V–30V Maximum Output Current: 3A Conversion Efficiency: Up to 92% Output Ripple: <30mV Switching Frequency: 150kHz Operating Temperature: -45°C to +85°C The module features a blue potentiometer for precise output voltage adjustment (clockwise increases voltage; counterclockwise decreases voltage). Use a multimeter to monitor and set the desired output voltage. A power indicator LED lights up when input power (3V–40V) is applied and the module is operational. Color: Blue Material: PCB Dimensions: 4.3 x 2.1 x 1.4 cm Package Includes: 1 x Buck Converter Module Note: Color appearance may vary slightly due to lighting and screen settings. Dimensional tolerance: ±1–3 cm.