The LD4 is a high-performance constant-voltage LED controller that delivers precise control via the standard DALI protocol and is fully compatible with all DALI systems. Supporting smooth dimming, tunable white, and full RGB/RGBW control. Multiple DT6 and DT8 device types can be selected using the NFC Lighting app, while key settings such as DALI address, dimming curves, fade times, and color temperature range can be configured via a DALI master, NFC app, or onboard buttons with a digital display. With an IP67 waterproof rating, the LD4 is suitable for both indoor and outdoor applications, providing reliable performance even in humid environments.