5Pcs LM2577 DC DC Adjustable Step up Power

Brand Name: Brand New Model Number: 0259# Color: Black Size: Approx. 4.2 x 2.2 x 1.1cm Wide Input voltage: 3V-30V Output Voltage: 4-35V (Adjustable) Output current: rated current 3A ( Heat-sink Needed) Type: LM2577 Step up Module