SF series is a fixed type surface mounted downlight with larger light-emitting area and smaller beam angle, the photoelectric parameters are same as DB series's.
Advantages
Patent private mold design, choose strong housing with good heat dissipation;
Choose branded LEDs like CREE, CITIZEN, EPISTAR against LM80 standard;
Choose ceramic PCB against pure gold thread, high stability and low light decay risk in future;
Choose branded driver like PHILIPS, TRIDONIC, LIFUD, BOKE, etc;