Does The Light Bulb That Changes Color Work?


Nowadays, you don’t need to buy many different light bulbs to get light of various colors. With one single smart light bulb—a light bulb that changes color freely—the lighting in your favorite space will be more colorful than ever. Want to know why a little light bulb has such magical power? Read on!

Principle of the light bulb that changes color

In this article, we will talk about smart light bulbs, which are different from RGB LED light bulbs. RGB light bulbs can also achieve the color changing effect, and you can control them with control panels. Some can also connect to WiFi or Bluetooth for more convenient control. The color changing function of the smart light bulbs is similar to that of the RGB light bulbs. But smart light bulbs have more abilities, such as changing the temperature of light or turning on or off automatically.

For a smart light bulb that can change color, there are several components that are very necessary. The first are the red, green, and blue chips and the controlling chip. With RGB chips, the light bulb is able to create over 16 million different colors to fulfill your needs for various occasions. When you send instructions to the light bulb to change the color, the controlling chip will work to send a signal to adjust the brightness of the RGB chips. When these chips are at full brightness, the bulb emits white light. The connection is achieved by WiFi, Bluetooth, or Zigbee, and you can use the app for the smart light bulb to set the specific color you want.

Control of the light bulb that changes color

According to the controlling method the smart light bulb uses, there will be corresponding components or accessories. The smart light bulb has additive modules for receiving signals like the instructions sent by the controlling panel, the mobile phone, or computer, and the information sent by infrared, audio, or illumination sensors. Then the central processing chip will be able to analyze them and change the color of the light. The mainstream controlling methods include WiFi, Bluetooth, and Zigbee, and each of them has its own pros and cons.


The first advantage of this technology is its low power consumption. When set to standby mode, it can keep working for 6–24 months with two 5-cell batteries. The second is low-cost. On the premise of not changing the traditional circuit, intelligent control is realized by directly connecting the ZigBee wireless module. Third, the scale of the network is large. Mesh topology can accommodate up to 65,000 devices. Fourth, ZigBee network nodes can perceive the existence of other nodes and form a structured network; the nodes can also self-repair when there is a change and automatically adjust the network topology. But there are also some relative limitations, such as low throughput, the need to support a large number of network contacts (to use WiFi to connect to the operation platform), low speed, etc.

zigbee structure


The biggest breakthrough and technical feature of Bluetooth is using Wibree with low power transmission. It adopts the simple GFSK method and has very low working and standby power consumption. Even a single button battery can support the operation of the device for more than a few years. Compared with ZigBee’s star topology, Bluetooth 4.0’s network topology is simple. Its transmission rate is several times higher than ZigBee’s, and it has an advantage over NFC in terms of transmission distance. Its disadvantage is that the scale of data transmission is limited and the number of device connections is small.


WiFi (Wireless Fidelity) is a short-range wireless transmission technology that supports data, images, voice, and multimedia with an output rate of up to 54 MB/s. It allows Internet users to receive wireless signals within hundreds of meters. Its advantages are its wide dissemination range, fast dissemination speed, and high rate of popularization and application. But because of its popularity, it is possible for hackers to steal personal information. Besides, sometimes the network is not stable enough.

Benefits of the light bulb that changes color


For some places, like bars and e-sports rooms, the advantage of color-changing bulbs is very obvious. The light bulb will be able to produce a dynamic light effect in real time according to the sound. This is achieved by the audio sensor and is an experience that cannot be obtained by merely manual setting.

Multiple choices

The color changing bulbs have a wide range of colors for you to pick from. You can not only change the colors and light effect but also save the setting to use next time. In the controlling app, there are different modes for cooking, bathing, etc., as well as a special light effect to simulate dusk, aurora, and so on.

Simultaneous control

By setting up the app on your phone, you are able to turn on or off many smart light bulbs at the same time. And they don’t need to be the same color. You can set the color of each light separately and simultaneously to get the light you want.

Simultaneous control of the light bulb that changes color

Physical health

The photoreceptor cells of the human body contain melanopsin, which can regulate the circadian rhythm in the human body through light. It sends signals to the brain, causing the hormone to be released. Hormone secretion disorders can lead to insomnia. Dynamic lights that can change the illumination and color temperature can help us adapt to time changes and sleep well. It can also be used in the office during the day to improve people’s working efficiency, which is beneficial for improving the quality of their sleep.

light bulb that changes color for sleep

Long lifespan

Most smart light bulbs are LED ones, which means they have a long lifespan. And compared with common LED light bulbs, the service life of smart bulbs can be much longer because they use better materials. As we know, heat is one of the main reasons that light bulbs are damaged. But since the smart light is well crafted, it has high efficiency and doesn’t emit much heat. The good one can have a lifespan as long as 25 years.

Light bulb that changes color at Mokolight

Mokolight is the best place where you can find a light bulb that changes color and has other functions to improve your life. Our smart light bulbs are made of first-class materials in our own factory, and the quality is guaranteed by various tests and certifications. We have worked in this industry for more than 16 years. Our experienced salesman will provide 24/7 support to help you find the best light bulb. Don’t wait and contact us now!

Written by ——
Adelyn Ward
Adelyn Ward
Master of Science; professional electronic engineer with over 7 years of experience in electronic design and engineering projects; proven expertise of LED manufacturing processes, capable of communicating intricate ideas to a broad range of audiences. Reach Me Now>>
Adelyn Ward
Adelyn Ward
Master of Science; professional electronic engineer with over 7 years of experience in electronic design and engineering projects; proven expertise of LED manufacturing processes, capable of communicating intricate ideas to a broad range of audiences. Reach Me Now>>
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