... series solar charge controllers 1. Production introduction: the input voltage: 12V,24V,48V,the output voltage:12V,24V, ... protection at night16)Over temperature and overload protection17)Battery overvoltage shutdown3. Technic Specifications TypeItemDC-1202DC-1206DC-1208DC ... over charge,over loading,over discharge,short protectdisplayLED solar ,load,batterySurroundings temperature-10°C~50°CSurroundings ...