LED ceiling lights with a diameter of about 200mm are suitable for use in corridors and bathrooms, while those with a diameter of 400mm are more suitable for installation on the top of rooms not less than 16m2. There are two common types of LED ceiling lights on the market: D-shaped tubes and circular tubes, as well as differences in large and small tubes. When choosing LED ceiling lights, you need to look three times. When it comes to whether the product labeling is complete, the labeling of regular products is often more standardized, and should include: trademark and factory name, product model specifications, rated voltage, rated frequency, and rated power. Check if the power cord of the lighting fixture has the CCC safety certification mark, and the cross-sectional area of the external wire should be ≥ 0.75mm ². Check if the live parts of the lamp are exposed. After the light source is installed in the lamp holder, fingers should not touch the live metal lamp head.
Ceiling lamps generally have ballasts and circular tubes inside. There are two types of ballasts: inductive ballasts and electronic ballasts. Compared with inductive ballasts, electronic ballasts can improve the light efficiency of lamps and systems, start instantly, and extend the life of lamps. At the same time, it has low temperature rise, no noise, small size, light weight, and consumes only 1/3 to 1/4 of the power of an inductive ballast, so consumers should choose electronic ballast ceiling lights. The circular lamp tube of the ceiling light has halogen powder and tricolor powder. The tricolor powder lamp tube has good color rendering, high luminosity, and slow light decay; The halogen powder lamp tube has poor color rendering, low luminosity, and fast light decay. Distinguish between halogen powder and tricolor powder lamp tubes. You can light both lamps at the same time. Place your hands near the two lamps and you will notice that the hand color of the halogen powder lamp tube turns white and distorted, while the hand color of the tricolor powder lamp tube is the natural color of the skin.
