ITEM NAME:DC-DC USB buck regulator power supply module 7.5V-9V / 12V / 24V28V to 5V m A2Y3 DC-DC USB buck regulator power supply module 7.5V-9V / 12V / 24V28V to 5V m A2Y3 Product Name: DC-DC buck charging module Product Size: L42mm * W16mm * H5mm Input: 7.5V-28V Output: 5V / 3A Conversion efficiency: 96% Max Switching frequency: 1.5MHZ (Max) Typical 1MHZ Operating temperature: -40 Degrees Celsius - + 85 Degrees Celsius Load capacity: maximum output 3A Scope: mobile power, mobile phones, flat panel USB5V power supply equipment Material: metal colour: blue size: 42X16X5mm Package Including: 1 x DC-DC power supply module Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.