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. The module features high conversion efficiency, 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., above 2A), adequate heat dissipation is required. This step-down module is commonly used in low-voltage systems, including 6V, 12V, 14V, and 24V battery charging and regulated power supplies. 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: Less than 30mV Switching Frequency: 150kHz Operating Temperature Range: -45°C to +85°C Power indicator lights up when input voltage is applied (3V–40V). Adjust the blue potentiometer knob (clockwise to increase output voltage, counterclockwise to decrease) and use a multimeter to monitor the output voltage. Caution: For long-term operation, maintain output current below 2.5A and ensure minimum input-output voltage difference of 1.5V. A heatsink is recommended when output power exceeds 10W. Color: Blue Material: Printed Circuit Board Dimensions: 4.3 x 2.1 x 1.4 cm Package Includes: 1 x Buck Converter Module Note: Color may vary slightly due to lighting and display settings. Measurement tolerance: ±1–3 cm.