20A Solar Power Controller / Solar Charge Controller With Digital Display

20A Smart Controller / Solar Power Controller With 2 USB Port For Solar Energy Introduction : 2017 new solar controller , housing appearance , innovative design , using a big - screen digital display , with double USB charging port , this controller is suitable for all types of solar panels , various types of solar panels , various types of batteries , MCU ( micro - controller ) with a PMW ( Pulse Width Modulation ) 0 ~ 100 % variable duty cycle process .To provide fast ,