How does sound control the light switch? What is the mystery?

Voice-controlled light bulbs actually add a sound sensor to the circuit. In fact, this device is somewhat similar to a microphone. As long as the sound is heard, the sound sensor can convert the collected sound waves into electrical signals. Then after processing by the chip in the circuit, the light switch can be controlled. Moreover, there is actually an energy-saving device in the voice-controlled light, which is a light sensor. So it won't light up when you hear any sound during the day, and will only work at night. Advantages of voice-controlled lights

Voice-controlled lights are more convenient. You can turn on the lights without any buttons when you can't see them. And the safety will be higher, because it is easy to fall if you are looking for the switch in a dark environment. But with voice control, you only need to speak loudly to turn on the lights, which is very convenient. Moreover, during the day, when the light is bright enough, the lights will not turn on because of the sound, which is more energy-saving and environmentally friendly. Disadvantages of voice-controlled lights

If it is night, voice-controlled lights become a bit useless, because as long as there is a little sound, the voice-controlled lights may light up. It may not be that passers-by really need lighting, because the surroundings The sound of TV or noise in residents' homes, or the sound of horns on the road, can cause voice-controlled lights to light up. This behavior causes a waste of electricity bills and is not very environmentally friendly. Although it is very convenient to use, it will also cause a certain degree of waste of resources. Comparison between voice-controlled lights and manual switch lights

Few people install voice-controlled lights at home, because voice-controlled lights usually do not last long and may go out automatically in tens of seconds. In public places, when passersby pass by, the lights will go out, which is more in line with the concept of energy conservation and environmental protection. Therefore, voice-controlled electric lights are now used in many corridors and communities. But it is more economical to use switched lights at home.