Downlight refers to a lamp with a screw lamp cap, which can be directly installed with an incandescent lamp or an energy-saving lamp. Downlight is a kind of lighting fixture embedded in the ceiling.

Downlight has mirror and frosted reflector. The specular reflective plate that brings flicker sense is used to adjust the frosted reflective plate of the ceiling with moderate brightness.

Downlight lamp cap is an important link, and the main material of lamp cap is ceramic. The reed inside is the most important. There are two types: copper and aluminum. A good brand uses aluminum, and a spring is installed under the contact point to enhance the contact.