... D Self protection : protection to overload, outside and inside short circuit, reverse connection, thunder and lightning PV penal reverse current, ... full, power low, over-discharge,over-load,out short circuit, load on/off,etc.F Industry level production standard: ... (Only for SDRC,SDRC,SDRC-MT)I Digital display & one key setting: The digital LED display indicates the work mode. One button operated ...