Boost Module: With TYPE-C-USB voltage input, you can obtain 9V, 12V, 18V, or 24V output by connecting a USB power adapter. Note: This is a boost converter module; the output voltage must be at least 2V higher than the input voltage. Adjustable Voltage: The power module supports DC 2-24V input with 5V-28V adjustable output voltage. Power conversion efficiency reaches up to 93%. Once a voltage is set, it remains saved and does not reset automatically, eliminating the need for repeated adjustments. Wide Application: These boost converter modules are suitable for emergency lights, electronic devices, DIY mobile power supplies with adjustable output, boost chargers, batteries, power systems, DIY adjustable regulated power supplies, industrial equipment, and applications requiring 5V, 9V, 12V, or 28V output. Note: Maximum output current is 2A. Before use, rotate the potentiometer approximately 15 times clockwise—the direction for increasing voltage. When reaching the end of the stroke, a clicking sound will be heard. Then adjust back down to the desired voltage. Input Voltage: 2V-24V Output Voltage: 5V-28V Efficiency: 93% Output Current: 2A Due to different production batches, variations in product appearance and printed text may occur. These differences do not affect functionality. Color: As shown Material: Plastic Package Contents: 5 x Boost Converter with TYPE-C-USB Note: The package includes only the items listed above. Other accessories are not included. Note: Lighting effects and display differences may cause slight variations in color between the image and the actual item. Measurement error allowance is +/- 1-3 cm.