USPRO&reg; LM2596S Mini DC/DC Power Supply Adjustable Decompression Module Product Name : Adjustable Decompression Module;Chip : LM2596S Fit for : Arduino;Input Voltage : DC 3-40V Output Voltage : DC 1.5-35V;Borad PCB Size : 45 x 20 x 14mm/ 1.7" x 1" x 0.5" (L*W*H) Material : Electric Part;Net Weight : 12g Package Content : Adjustable Decompression Module