... , without extra lens, Super Brighth HPS (>70lm/W), Low Light decay: only 4% after using for 10000 hourscontrollerSRS patent Controller ... functions, such as, Anti-Over-charge, Over-discharge, with Light Sensor & Timer, including the Digital LED Driver to drive the LED ... rainy&cloudy days backup. 2. Super bright HPS with rectangular light distribution. 50-130% higher ground illuminance than others' with ...