solar controller with compititive price and high quality. Features:1, ... MOSFET as the main switch device of solar controller3,Adopting the cascade PWM charge main loop,reduced half when use ... digital LED to show the two load control mode.5,Controller inside adopt the industrial chip, working well under cold, ... 5500mDimension140×90×27Mounting hole measurement132.5×70 SWL-05AP solar charge controller