Dear customer: Thank you for choosing my store for shopping. The following are the matters needing attention for shopping:A. Economic transportation: detailed tracking information will not be included. Most of the packages will cause delayed delivery within the expected delivery time, so you need to be patientB. Each product link: There will be different option variants. If you do nt know how to select the product you want, please contact me, I will be honored to solve this problem for you.C. When you receive the package, there is product damage / product problem / error product and shipping problem, please contact me in time, I will solve it for you!D. If you are a wholesaler / distributor, a large number of orders and quantities, to provide you with factory prices, and hope to be honored to reach a partner with you!GOOGZON store: I wish you a happy life! Brand newInput: 3.5-28V.Output: 1.25V-26V.Output voltage independent of input voltage (3.5V-28V input, any value output 1.25V-26V).Maximum input current 3A.Maximum output 3A.Rated input 1A, Output 1A.Size:5.2cm x 3.8cm x 2cmPackage includes:1xXL6009 LM2596S DC-DC Step Up Down Boost Buck Voltage Power Converter Module