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Generally, there are many small watts, especially LED lighting, but there are also some that need to be specific to the product description.
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It should be more. The 5W energy-saving lamp is already very bright.
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Changming night light has big and small, depending on their actual needs, you can choose a slightly larger one if you want to be brighter, on the contrary, you can choose a smaller power, of course, you can also choose a higher-grade night light, sound and light control, infrared remote control, 10-level dimming, color and other multi-functional night lights, as shown in the figure below:
It's very small, with only one or two small LEDs, right? Only, it is far less than one kilowatt-hour of electricity for a whole year.
It's still 220V, but the power of the lamp is small, only a few W.
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1 kilowatt electric heating appliance uses 1 kilowatt of electricity for one hour, that is, 1 kilowatt-hour = 1 kilowatt hour, which means that it uses 24 hours of electricity.