Features: LED Light Engine Board replace Part Number 619818Z, 3525-65, 54684. Suitable for 2nd Generation color LED lights (2009-2025). fits for LED swimming pool & lights: 601000, 601001,601002,601003, 601004, 601010, 601011, 601012, 601013. Make of Plastic, this light is not only durability and reliability, but also provide excellent brightness and longevity but also offer excellent moisture resistance for stable performances in underwater environments. Easy To Install: This set contains all accessories included, direct replacement, requiring none modifications. Simply remove the nut screw from the single tension wire clamp using a drill or socket wrench, then remove the clamp, lens, and washer. Choose from five brilliant fixed colors (blue, green, magentas, white, and red) or select a of seven pre-programmed color shows to transform your pool’s environment and create a truly spectacular nighttime atmospheres. Specifications: Component: PCB Size: As Shown in the Picture Product model: 619818Z Package Includes: 1set LED Light Engine Board set note: Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. Due to the difference between different monitors, the picture may not reflect the actual color of the item.