LED features and advantages of the inherent characteristics of LED determines that it is the ideal light source to replace the traditional light sources, it has a wide range of uses. Small volume is basically a small LED chip is encapsulated in epoxy resin inside, so it is very small, very light. Low power consumption LED power consumption is very low, in general, LED's operating voltage is 2-3.6V. Operating current is 0.02-0.03A. That is to say: it does not exceed power consumption of 0.1W.