Solu Dc 12a 300w Step Down Buck Converter 7-32v to 0.8-28v Power Module LED Driver//dc-dc Voltage Step-down Module 7-32v to 0.8-28v Power Supply Buck Converter// Adjustable Step-down Power Module 24v to 12v Constant Current 12a About us (Solu ), Professional factory of circuit boards for Arduino, welcome to our store for more choices with best price. What we pursue is your satisfication of our service, not just for our goods.For any reason you are unsatisfied with our product at any time, simply contact support for exchange or refund. we will reply you about any question you ask within 24 hours Use a dedicated benchmark IC, and high-precision current sensing resistor, can make more stable constant current High output current, the max output current can reach 12A. Suitable for LED driver. Low output ripple , high frequency capacitor reduces output ripple. Usually, you will get it actually in 9~19 days, If you are in the USA and the item is NOT Fulfilled by Amazon. the item will be sent to you by USPS with shipping information from China. The estimated delivery time offered by Amazon is not the real time. Your patience is highly appreciated. Hope you will receive your item soon and enjoy using it.