ITEM NAME:DC DC Step Down Power Supply Module Buck Regulated Board Electronic DIY PCB Product Description Description: DC DC Step Down Power Supply Module Buck Regulated Board 2A Input 8-55V Output 3.3V Electronic DIY PCB Specification: Input voltage: 8~55V Output voltage: 3.3V Current: 2A Size: 25*16*9mm/0.98*0.62*0.35'' Note: Please allow 1-3cm differs due to manual measurement. Due to the different display and different light, the picture may not show the actual color of the item. Thanks for your understanding. Included: 1 x DC DC Step Down Power Supply Module.Due to the different display and different light, the picture may not show the actual color of the item. If item is defective after 3 months, you can still send it back to us. We will send you a new one after receiving the defective item.