MT3608 DC-DC Step Up Converter Booster Power Supply Module Boost Step-up Board MAX output 28V 2A 1.Electrical characteristics 1). The maximum output current: 2 a 2). The input voltage: 2 v ~ 24 v 3). The maximum output voltage: 28 v 4). Efficiency: >93% 2.Mechanical properties 1). product size: 36 mm * 17 mm * 14 mm 3.Method of use The module of the IN+ and - after 2~24v, IN adjusting the potentiometer can adjust output voltage, output voltage is greater than the input voltage 4.Matters needing attention 1). The input voltage should not exceed the maximum input voltage 2). The peak current output current is no more than TV university Before purchase: 1.All the goods are ready stock, we will arrange the shipment at once if we receive the order. 2.Please read the item description, if you have any question, do not hesitate to contact us. 3.No warranty,if you receive a defect item,please contact us at once with item picture. 4.Use the vouchers for more saving. Shipment: 1.1-2 days to ship(except for the pro-order item) and 10-15 days shipment. 2.If you have not received the item after 15 days shipment,Please contact us. After purchase: 1.If you are satisfied,please give us 5 stars praise. 2.Please contact us before you are going to give us bad review. We are helpful and will solve the problems. if you receive a defect item,please contact us at once with item picture or video