... reach 150 degree7. light decay less than 4%3. Controller of Solar Street LightV-Detector Technology:· Adjust the brightness ... circuit, Reverse discharging, Polarity, Lightning, Brownout and Over-charge. Fully Automatic Operation: · Detects day and night by sensor on the PV ... pressure sodium light.Controller: over 8 years of typical operating life, with a 2-year warranty, automatic operation from dusk ...