Q:There are no holes 7 cm, 9W led downlight

9W downlight generally open hole is 11 cm...Go and look for it on Taobao

Q:How much LED 150W downlight spiral energy-saving lamp replacement

No matter where you use it, in general, not less than 50W LED lights can be, if not white, power needs to increase a little.

Q:Led downlight can light panel directly with intelligent dimming Mody?

No, the LED dimming should be adjusted in its drive circuit

Q:How to choose the right LED downlight

Look at the radiator lamps: cooling speed determines the degree of attenuation of the whole lamp and the service life of the radiator is too small will accumulate in the light of internal temperature. Light long time working under the condition of high temperature, light decay very fast, life is short. Our shell and radiator are all thick materials to ensure heat dissipation.

Q:LED lamp is mainly used in where

Shopping mall. Just walk a lot and a lot of LED downlight.

Q:LED is not only the benefits of downlight what harm?

LED lamps are not in good order, so the government's attitude is right. Now the LED lamp light is concentrated, contrasting. Environmental protection, without mercury (Hg) and other harmful substances to the environment, will not cause damage to the environment. LED lamp assembly can be easily disassembled, no manufacturers recycling are available through other people recycle. LED does not contain infrared and ultraviolet light, so it does not attract insects. LED downlight is a photoelectric (www.heg-led ) of LED lighting products specializing in the production of a series of novel styles, are sought after by consumers. Specific details, you can understand, and I believe it will be of great help and inspiration to you.

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:Turn off the lights after the bright LED lamp

Because the electrician is working on the power off switch, the power switch is a zero line, not a live wire. Electricians know that the power switch must be cut off by the line of fire, and no danger of electric shock is announced. If the power switch is on fire line, after the power is cut off, the FireWire will continue to supply power to the LED driver. Therefore, the LED lamp will have a faint light when the switch is turned off.

Q:Now there is no replacement of the LED light source lamp?

There should be. You can ask the person who sold the lamp

Q:The difference between ordinary LED lamp and LED downlight and integration of advantages and disadvantages

Can work in a high-speed state: energy-saving lamps if frequent start or turn off, the filament will blacken, quickly damaged