1. Choose from the brand. You should choose a brand name or brand with "R" registered enterprise products, the appearance of the LED light is exquisite, the product trademark, model, specification printing is clear and beautiful, there should be no deformation, paint, uneven color, etc.

2. The LED lamp usually uses aluminum as the radiator. The larger the contact area between the radiator and the air, the better, which is conducive to heat dissipation, the whole lamp works stably, the light decay is small, and the life is long; the bulb and ceiling spotlights should not be too large Breathable holes to prevent mosquitoes from crawling in during use, affecting the lighting effect or causing unnecessary damage.

　　3, LED bulbs, ceiling spotlights, track spotlights, if they are irradiated on a white wall, there should be no obvious color temperature errors such as color spots, color circles, etc. If there are such phenomena, it means that the light source of the lamp is inferior.

4. When the LED light is turned on, there is a time difference between a few tenths to two seconds between the power on and the light emitting, which is a normal phenomenon. Usually the light is driven by a constant current source with an IC integrated circuit, and its steady current and voltage stabilization performance Better and stable work.

　　5. Do not heat the lamp body too high or unevenly during operation. If there is such a phenomenon, it indicates that there is a problem with the design or manufacturing process of the lamp, and the light decay is large and easy to damage.

　　6. Due to the high brightness of LED lights, it is difficult to judge the brightness of the two brands of the same type of lights under the same conditions by looking at the eyes directly, and it is also easy to damage the eyesight. Usually we recommend to cover the light source with a piece of white paper, and then compare the light after attenuating the light through the white paper, so that it is easier to see the brightness difference of the lights, the higher the brightness, the better. In addition, the color temperature closer to sunlight is the best.

7. If time permits, you can compare the brightness of two lamps of the same specification first, and then light one of them continuously for a week, and then compare the brightness with the previously compared lamp. If it is not significantly dimmed, It shows that the light attenuation is small and the quality of the light source is better.

8. For those ceiling spotlights, track lights, high-power integrated light sources, COB high-power light sources, and multi-chip products that can easily remove the mask to see the lamp beads, you can use the lamp bead light source to close your eyes and turn on electricity. , Turn off the power and open your eyes at the same time, you will see the afterglow of the lamp bead chip. If the afterglow disappears time error is too large, it means that the quality of the lamp bead chip is uneven, or the quality of the lamp bead chip is inferior. The whole lamp is easy to damage and has a short life span and is not easy to buy.

9. When the LED lamp is working, when there are refrigerators, air conditioners, water heaters and other high-power electrical appliances around, there should be no changes in brightness and darkness. If there is such a phenomenon, it means that the driving of the LED lamp is not constant current or constant pressure. This has a certain impact on the life of the lamp.

10. There is a way to judge the quality of the LED light by observing the LED light through the camera of the mobile phone screen, so that it is not accurate to judge the quality of the light. It is definitely not good to have stripes scrolling and flashing, and it may not be good if there are no stripes rolling and flashing. Because of our different mobile phone screens and cameras, their scan refresh rates are different, and their sensitivity is also different for those low-end RC step-down drive products.