... brightness degradation1.4,Constant current driver to ensure product performance and stability2. Product Application: It used in the corridor, disco ... bars, hotels, homes, shopping malls,office buildings, jewelry, clothing and other lighting situations widely.3. Driver Parameters Input VoltageInput FrequencyPower ... -25 to 50 °C1%-3%/1khr50000 HrsCE & RoHs High quality 30W LED Track spot Light CE&RoHS