Product DescriptionUp to 2A current output, wide range input voltage from 2-24V, output 5/9/12/ – 28V, adjustable. This is better replacement for LM2577. _Very price-effective, compact, and powerful item.Features:Maximum output current: 2AInput voltage: 2 v ~ 24 vMaximum output voltage: 5V ~ 28 vEfficiency:> 93%Mechanical size: 36 mm * 17 mm * 14 mmInstructions: Connection module + and – input