How to choose a good LED down light

    General household downlight maximum not exceeding 2.5 inches. LED lamp is one kind of energy saving and environmental protection lamp model, can be used as the ordinary lamp replacement, light than ordinary good, the only drawback is that if a bad 1, 2 light points can not be replaced. How to choose a good LED down light? You can refer to the following contents.
    Downlights surface cover material also divides a lot of kinds, iron, pure aluminum, die-casting and other materials, generally iron lamp price cheap, pure aluminum and die casting and other materials are more expensive, but more durable. Engineering downlight mostly iron cover material, but suggested that household LED downlight with not easy rusty surface cover.
    Lamp holder is a more important, the main material is ceramic lamp holder. The inside of the reed is the most important, with copper and aluminum sheet two, a good brand is used in aluminum sheet to do, and a spring is installed at the point of contact, can strengthen the contact. Power line also is the lamp holder, a good brand is to use three wire holder (three wire FireWire, Ling line, ground wire), and some will take wiring terminal, this is also the distinction between good brand and generic brand a very basic method. Reflecting cup general sand cup and the light cup two, material is aluminum, aluminum will not change color, and light reflecting degrees to better. Some small manufacturers will be to do with plastic spray technology, this new look good, but will darken over time, or even black. The identification method is to look at cutting the neat degree, aluminum cutting neat, spray the opposite.

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