Illuminated pushbutton is a pushbutton device with luminous function, usually used on various electronic devices, machines or control panels. Here is some detailed description of it:

1. Button structure: usually consists of a push button and a built-in light-emitting device. Buttons are usually round or square with a flat surface that makes them easy to press.

2. Lighting function: LED (light-emitting diode) or other similar light sources are embedded around or inside the button. These light sources can emit light of different colors, such as red, green, blue, etc., and sometimes they can be multi-colored.

3. Usage: Illuminated pushbutton is widely used in various occasions, such as machine operation control panels, electronic game equipment, car interior control buttons, household appliances, etc. Not only do they provide easily identifiable pressure points, they also enhance the user experience with light feedback.

4. Durability and Water Resistance: Well-designed illuminated pushbuttons usually have a durable casing to protect the internal electronic components from mechanical damage or environmental factors. Some models are also waterproof for use in wet or dusty environments.

Overall, the illuminated pushbutton is a powerful and attractive button device that provides a more intuitive user interface through its illumination function and plays an important role in various applications.