... automatically 2.Soft switching, OMS time-delay function AC/DC hybrid Solar street light controller SR-LE1.AC/DC switching over automatically ... .2.Soft switching, OMS time-delay function.AC/DC hybrid series(SR-LE)1. AC/DC switching over automatically.2 ... depth of discharge by storage battery according to the utility power supply situation.ModelSR-E seriesrated charging current5A ,10A ,15A , ...