There are two types of spotlights: low-voltage and high-voltage. Consumers should choose low-voltage spotlights, which have a longer lifespan and higher luminous efficiency. The luminous efficiency of spotlights is reflected in power factor. The larger the power factor, the better the luminous efficiency. The power factor of ordinary spotlights is about 0.5, which is cheap. The power factor of high-quality spotlights can reach 0.99, and the price is slightly more expensive.

　　 Spotlights are generally used to enhance the lighting of decorative objects. They are usually embedded in the ceiling or wall. The spotlights usually emit higher temperatures when working, so you must buy high-quality products, otherwise there will be safety hazards.

　　 Spotlights should be used with a transformer when using them. The lamp beads should also be of good quality, otherwise the spotlight beads are easy to break. Think about it, the spotlight beads in the ceiling are quite troublesome to replace.

　　 The quality of spotlights on the market is uneven, and it is difficult to distinguish between good and bad with the naked eye. Therefore, it is best to choose branded products and high-quality transformers that match the spotlights.