Sealed Light Engine with Bluetooth® Connectivity. The newest generation of the venerable Lightvault family, Lightvault 8 features a sealed LED light engine and Bluetooth connectivity for aiming and dimming. Because the light engine is sealed, Lightvault 8 is maintenance free and impervious to water and debris. Lightvault 8 is the most durable, versatile, advanced in-grade luminaire solution available on the market today.