What material is the downlight? How to install the downlight?

Now hotels and families need downlights. Is it selected by brand or material? What material is the downlight? How to install the downlight? Matters needing attention: methods/steps 1 downlight material cover material: there are many kinds of materials for downlight cover, such as iron surface, pure aluminum, die casting and so on. Generally speaking, iron-faced downlights are cheap, while pure aluminum and die-casting are more expensive, but they are more durable. Iron-faced downlights are widely used in engineering, but it is suggested that downlights in home decoration use a cover that is not easy to rust. The lamp cap of downlight is an important part, and the main material of the lamp cap is ceramics. The reed inside is the most important, there are two kinds of copper and aluminum. Good brands are made of aluminum, and a spring is installed under the contact to strengthen contact. The other is the power cord of the lamp holder. Good brands use three wires to connect lamp holders (three wires are live wire, zero wire and ground wire), and some of them will have terminals, which is also a very basic way to distinguish good brands from ordinary brands. Reflective cup material: there are generally two kinds of sand cups and light cups. The material is aluminum, which will not change color and has better reflectivity. Some small manufacturers will use plastic spraying to do it. This new process looks good, but it will become dark or even black after a while. The identification method is to look at the uniformity of the cut. Aluminum is cut neatly, but plastic spraying is the opposite. 2 Precautions for installation of indoor downlight 1. Check whether the product is in good condition immediately after opening the package of downlight. Faults caused by non-human factors or requirements specified in the manual can be returned to the retailer or directly to the manufacturer for replacement. Second, cut off the power supply before installation to ensure that the switch is in a closed state to prevent electric shock. Please don't touch the surface of the lamp after the lighting is on. This lamp should be avoided to be installed in heat sources and places with hot steam and corrosive gases, so as not to affect its service life. Third, please confirm the applicable power supply according to the installed quantity before use. This product is for indoor use only. Please pay attention to waterproof outdoors. Before installation, ensure that the installation position can bear 10 times the weight of this product. Fourth, the lamp cup powered by high voltage (1 10V/220V) is not suitable for working in the state of frequent power on and off, which will affect its service life. Five, installed in a flat place without vibration, swing, no fire hazards, pay attention to avoid falling, hard object collision, knocking. 6. If the downlight is stopped for a long time, it should be stored in a cool, dry and clean environment, and it is forbidden to store and use it in damp, high temperature or inflammable and explosive places. You can install the downlight in the above way. If you still don't know, ask the installer!