... temperature4.High-precision constant current drive, which can extend the LED lifespan;5.The tube has automatic illumination detection device. Only ... ):4000-5500K3.Cool White(CW):6000-7000K Application:Apply in underground parking lot,garage,basement,supermarket,aisles, Corridor,hotel, office, ... service is available in our company: T8,23W intelligent infrared LED underground parking tube light