1. The general household downlight does not exceed 2.5 inches, and 5W energy-saving lamps can be placed.
2, LED downlights are only available in recent generations, can be used as a substitute for ordinary downlights, light is better than ordinary, the only drawback is that if the fault is 1, 2 lights can not be replaced.
3, downlight cover material is also divided into a variety of materials, iron, pure aluminum, die-casting and other materials, in general, iron-faced downlights are cheap, pure aluminum and die-casting materials are more expensive, but more durable. There are a lot of iron lamps used in the project, but it is recommended that the downlights for home decoration use a cover that is not easy to rust.
The downlight head is a more important part. The main material of the lamp head is ceramic. The reeds inside are the most important. There are two kinds of copper and aluminum. The good brand is made of aluminum, and the spring is installed under the contact point to enhance the contact. In addition, the power cord of the lamp head, a good brand is to use a three-wire wiring lamp head (three wires, namely, fire wire, neutral wire, ground wire), and some will bring the terminal block, this is also a very basic method to distinguish between good brand and ordinary brand.
Reflective cups are generally two kinds of sand cups and light cups. The material is aluminum, the aluminum material will not change color, and the reflection degree is better. Some small manufacturers will use plastic spray to do it. This new process looks good, but it will darken or even darken over time. The method of identification is to look at the uniformity of the cut, the aluminum is cut very neatly, and the spray is the opposite.
characteristic
1. Compact and high luminous flux. The energy-saving lamp is one-fifth of the incandescent lamp, the life is six times that of the incandescent lamp, and the size maintains a compact design of 175, which suppresses the presence of the lamp and creates a bright space.
2. Two kinds of reflectors with mirror and frosted. A glittering specular reflector that blends the frosted reflector of the ceiling with moderate brilliance.
3. The sliding fixed card is adopted, which is convenient for construction. It can be installed on ceilings of different thicknesses from 3mm to 25mm, which can be easily removed during maintenance.
4, there are many color temperature of energy-saving lamps, commonly used are 6400K (white light), 4000K (neutral light), 2700K (yellow light) three types, these three color temperatures can create a different atmosphere. The most suitable color tube can be selected according to different purposes.
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Other Valve
Globe Valve,Foot Valve,Sampling Valve,PVC Globe Valve
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