... : polycrystalline silicon,60WBattery:specilized for solar,80AH,12VController:time-control,over-current,over-voltage,temperature protection,humidity protection,12V/10ABattery ... 60%~80% energy than the sodium lamp with equal illumination. Switch Power Supply (SPS) makes DC and AC currents are ... , light off by time set. No need for manual control after the first set. Solar Street Light with high quality