The LL-504BC2V-B4-2BD is a Lucky Light LED module made by the Taiwanese manufacturer Lucky Light Electronics. It is a 4W module, which has a total light output of 4,000 lumens and a color temperature range of 2,700K-6,500K. It features a built-in 2-band dimming feature, allowing users to easily adjust and customize the brightness and color temperature of the emitted light. This module is designed for robustness and longevity, with a lifespan of 50,000 hours. Additionally, its design is sealed, making it suitable for use in wet or dusty environments.