... polycrystalline silicon,60WBattery:specilized for solar,80AH,12VController:time-control,over-current,over-voltage,temperature protection,humidity protection,12V/ ... for remote area without national grid, water pump, or even in space. 2. Environment protection No pollution, no noise, no ... light off by time set. No need for manual control after the first set. Solar Street Light with high quality