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2."Business days" means Monday-Friday, excluding holidays.
3.DHL and UPS cannot ship to military or P.O. boxes address
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Q:How to judge the quality of LED downlight
No professional instruments, only to see the brightness drive, the size of the work chip ~!
Q:Common questions about LED downlight spotlights
Currently on the market Jiezhuang LED downlight is 12--24 DC drive, just some built-in drive, directly connected to the 220V power supply, there is need to use power.
Q:There are no holes 7 cm, 9W led downlight
Spotlights, 7 cm can do, and if you feel dazzling, you can use acrylic diffuser plate to do astigmatism, you can also adjust the angle
Q:What is the role of LED downlight
In fact, choose a good day Lantern is a LED lamp energy saving function, ordinary energy-saving lamps should be minimum 5W is generally 11W, a LED lamp bead is 1W, long service life, ordinary energy-saving lamps have radiation, light at 400 nm will produce ultraviolet light is harmful to people, UV will attract insects so the general energy-saving lamp has bugs in the circles above, the LED will not produce ultraviolet
Q:How to choose the right LED downlight
Understand the lamp brand and packageEffect: lighting lamp lamp quality, packaging process influence quality, key factors such as heat dissipation lamp. The United States, Taiwan LED chip chip chip, domestic chip etc.. Different brands, the price difference is large,Lighting effects vary widely. The light source used by our company is all internationally famous brand light source.
Q:The opening 7, 5 cm height of the LED lamp, home decoration into the floor with fear of hydrochlorothiazide
75mm hole, downlight height can be controlled in 3W.5W, height of about 50mm, there is a need to ask me.
Q:Excuse me, how to install the LED lamp?
According to the instruction, the hole is opened on the ceiling with an openerThree: after opening the hole, pull out the wire, then connect the drive and the lampPay attention to the positive and negative poles of the lamps and lanterns, the ground mark of the lamps and lanterns, and correctly install the ground wirePay attention to the distance between the fixtures and the wall or the wall so as to facilitate the heat dissipation of the lamp
Q:What is the size LED downlight
LED lamp size generally have 6 inch, 5 inch, 4 inch, 3 inch, 2.5 inch, inch inch refers to here, refers to the inside of the reflection cup diameter.The commonly used standard size and parameters of LED downlight:2.5 inch LED lamp size parameters of hole (phi 80) - page table size Phi 102 * H30 power 3W;3 inch LED lamp size parameters of hole (phi 90) - page table size Phi 112 * H30 power 5W;3.5 inch LED lamp size parameters of hole (phi 100) - page table size Phi 122 * H30 power 7W;4 inch LED lamp size parameters of hole (phi 120) - page table size Phi 146 * H30 power 9W;5 inch LED lamp size parameters of hole (phi 150) - page table size Phi 180 * H30 power 12W;6 inch LED lamp size parameters of hole (phi 160) - page table size Phi 190 * H30 power 15W;LED downlight is a kind of embedded lighting ceiling light shooting style.
Q:Led downlight and LED flat lamp that is durable
This is not comparable. The simplest thing is to see which lights have CCC certification, so that at least in quality will be better.
Q:LED is not only the benefits of downlight what harm?
The characteristics of LED lamp: overall unified and perfect to keep building decoration, without destroying the lamps installed, building decoration light hidden inside, the light source is not exposed, no glare, the visual effect is soft and uniformThe advantages of LED downlight:1, energy saving: white light LED energy consumption is only incandescent lamp 1/10, energy-saving lamps 2/5, longevity: LED theoretical life can be more than 100 thousand hours, for ordinary family lighting can be described as "once and for all"". LED downlight pictures (19)2, can work in a high-speed state: energy-saving lamps, if frequent start or turn off, the filament will blacken, quickly damaged.3, solid state package, belong to cold light source type. Therefore, it is easy to transport and install, can be installed in any micro and closed equipment, not afraid of vibration, the main consideration is the heat dissipation.4, LED lighting technology is changing rapidly, and its luminous efficiency is amazing breakthrough, the price is constantly decreasing. The era of a white LED lamp coming into the home is fast coming.5, environmental protection, without mercury (Hg) and other harmful substances to the environment, will not cause damage to the environment. The assembly parts of LED lights can be easily disassembled and disassembled, and can be recycled by other people without recycling by the manufacturer. LED does not contain infrared and ultraviolet light, so it does not attract insects.6 、 fast response speed: LED fast response, completely eliminates the shortcomings of the traditional high voltage sodium lamp glow process.To say LED downlight drawback is the market disruption of LED products are not up to the specified standard, so the market will have a lot of defects, and the price is low