... Light decay: only 4% after using for 10000 hourscontrollerSRS patent Controller, Patent NO. ZL 2007 2 0058679.1, With many ... -charge, Over-discharge, with Light Sensor & Timer, including the Digital LED Driver to drive the LED lighting, Protective Rank IP67 ... , hot dip galvanized type, plastic-coating / painting1.Unique patented digital controller saves 70-85% extra power than regular ones and realize ...