4 Hrs 25% Reduction; 4 Hrs 50% Reduction; 4 Hrs 75% Reduction; 6 Hrs 25% Reduction; 6 Hrs 50% Reduction; 6 Hrs 75% Reduction; 8 Hrs 25% Reduction; 8 Hrs 50% Reduction; 8 Hrs 75% Reduction; Compatible with DALI; No dimming