A fluorescent lightbulbs are used to illuminate a room in this picture taken on January 22, 2020.
A fluorescent bulb is an electrical light source used in most residential lighting and home automation.
It can be purchased from most home electronics stores or online.
In this case, the bulbs are fluorescent blue and yellow.
The device is used to brighten and dim the room.
If the bulb is placed in the middle of a room, it creates a bright light, while dimming it brings a more muted effect.
This fluorescent bulb will only work on white walls.
If you have a dark or white wall, you may want to use the white bulbs instead.
You may also need to check the color of the walls you have installed the lights on.