LEDs (Light Emitting Diodes) are solid light bulbs which are extremely energy-efficient. When first produced, LEDs were limited to single-bulb use in applications such as remote controls, electronics, pen lights and strings of indoor and outdoor Christmas lights.
Manufacturers have expanded the use of LEDs by “clustering” the small bulbs together. Today, LED bulbs are made using as many as 180 bulbs per cluster, and encased in diffuser lenses which spread the light in wider beams. Now available with standard bases which fit common household light fixtures, LEDs are the next generation in home lighting.