solar controller with compititive price and high quality. Features:1,Adopting the single-chip microcomputer ... life MOSFET as the main switch device of solar controller3,Adopting the cascade PWM charge main loop, ... load control mode.5,Controller inside adopt the industrial chip, working well under cold, high temperature, damp environment.6 ... 27Mounting hole measurement132.5×70 SWL-05AP solar controller