All In One Solar Street Light. PIR motion sensor with 3 Lighting Modes. Standard stock is 5000k but also available in 4000k and 3000k. Featuring the latest in technology. ALS (adaptive lighting system): During cloudy weather the system will automatically adjust to optimize to the maximum light output in accordance with remaining battery capacity. TCS (Temperature control system): If ambient temperature rises to 149° F the system will temporarily shut down to protect the battery. After ambient temperature dips below 149° F the system will resume normal function.