Check the listing for details. XL6009 32W 4A DC Boost Adjustable Voltage Converter Step Up Module Power Supply. Condition: New. Listed at 3.15 USD. It may be necessary to turn the potentiometer up to 15 times before the output voltage changes • This is a boost module, the output voltage must be greater than input voltageBoost voltage to a stable regulated output. Useful for a wide range of applications, such as powering devices from a 3.7V lithium cell, powering higher powered electronics from a 12V battery, and a wide range of automotive and electronic projects • Constant voltage regulation, suitable for LED strips and modules, but not for raw LEDsThe XLSEMI XL6009 boost regulator IC has an integrated MOSFET, over-temperature protection, and over-current protectionInput: 3.5-32V DC • Output Voltage: 5.7-35V • Output Current: 4A (max 3A recommended) • 32W Maximum Power • 400KHz Switching Frequency • ＜50mV Output ripple • ±0.5% Load Regulation • Up to 94% efficiency (depending on the voltage difference between input and output) • Size: 43x21x14mmXL6009 Datasheet: https://www.jacobsparts.com/files/XL6009.pdf Orders under $10 ship without tracking If you need tracking on orders under $10 then pay the extra $1.99 for package service Freight Forwarders and US Territories (except PR): Orders under $10 will be canceled unless the $1.99 shipping option is selected at checkout