A Chip On Board LED Downlight consists of a single LED chip, mounted on the downlight, compared to an array of LED’s like an SMD. As the single cluster of LED’s are mounted in one point, they require greater cooling, so a larger heat sink, usually made of aluminium, must be mounted to dissipate the heat. As more material is required to manufacture a COB LED heat sink, this usually increases the cost slightly. COB downlights provide a better light source. It achieves a more focused light and with the use of reflectors, the light beam can be controlled. Chrome reflectors surrounding the diode can be replaced and set at different angles to make the light beam narrower or wider. Due to the narrow beam and with the use of reflectors that are usually clear, COB lights generate crisper and cleaner as there is no frosting on the lenses. which cuts down the clarity of the LED light. Due to the clear lenses, more light can penetrate further which means they perform well in rooms with high ceilings.