A LED lamp is an electric light or light bulb for use in light fixtures that produces light using light-emitting diodes (LEDs). LED lamps have a livespan and electrical efficiency which are several times greater than incandescent lamps, and are significantly more efficient than most fluorescent lamps, with some chips able to emit more than 300 lumens per watt.

LED lamps are often made with arrays of surface mount LED modules (SMD modules) that replace incandescent or impact fluorescent lamps, mostly replacing incandescent lamps rated from 5 to 60 watts.

A significant difference from other light sources is that the light is more directional, i.e., emittied as a narrower beam.

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