How many led bulbs
the led lamp is broken just need to change, led lights how to change a lightbulb?
in the first place, will switch off first, and then with the help of a ladder down down led lamp shell, check whether the lamp is with dark hair and dark hair. If lamp black, suggests that leds basic has been damaged, need to go to the hardware store to buy a new bulb replacement. If the lamp has not been damaged, should tighten the tube to see if joint contact undesirable phenomenon, this kind of situation is also often happens.
if these problems are not, you can check the ballast are in good condition, for the smell of burning. If the ballast appearance appear black burning phenomenon, then it is likely to be ballast is appear problem, only need to replace a can, ballast price is usually more expensive than leds. Finally, we also check the contact of the led lights for electricity, if not, then should be the problem of switch or circuit.
ACT)
About 30% of the street lamp has been replaced with energy saving LED lights.
can directly replace the existing same E27, E14, GU10 and B22 interface of energy-saving lamps and bulbs products, usually don't have to do any change, don't need any technician or professionals, with detailed read let's use of instructions, DIY can easily implement from general lighting replacement LED lighting.
Now to explain for you!
a, principle limit
radar sensor LED bulb light is the doppler radar induction principle, can wear non-metallic objects, common board, gypsum board, glass can penetrate, radar sensor signal can penetrate through the wall, even invisible installation effect, but the metal objects can block radar signal, technical principle limit do not use a metal shell.
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