1.Module Feature: Non-isolation booster 2.Ectifier system:Not synchronous rectifier 3.Input voltage:4.3V-32V 4.Output voltage: 5V-52V 5.Incoming current:4A(maximum) Colour:As the picture shows Transfer efficiency:94%(The highest)Normal efficiency for85% Switching frequency:400KHz Output ripple:50mV Load regulation:±0.5% Voltage regulation:±0.5% operating temperature:-40℃~+85℃ Function key: 1).Short : input/output display options 2).Moderate : Enter the fine-tuning state .Increase or decrease the offset (the default is 0), when the voltage display inaccurate use .Short according to the regulation, long or long according to restore 3).Long : the state of low power consumption, the digital tube and the lights are out, the normal work of the module. Click the button again to restore. Normal display Clockwise to adjust output voltage: Clockwise----- increasing voltage Counterclockwise----reduce the voltage Material: Metal Package Contents: 4 x Step-up Module Only the above package content, other products are not included. Note: Light reflection 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.