Solu &reg; 1w LED Driver 350ma PWM Light Dimmer Dc-dc Step Down Module for Arduino //1w 350ma Constant Current LED Driver PWM Dimmer Lighting Control Dc 5v-35v Buck Power Supply 12v// 1w LED Driver 350ma PWM Light Dimmer Dc-dc Step Down Module 5-35v// 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 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. Overload, short circuit, overcurrent protection, to ensure the supply security. Output 350mA20mA drive 1-10 pieces 1W LED Ultra-small size design . low noise. 5-35V input range