Which device is typically used to reduce the brightness of lights in a space?

Dimmers are specifically designed to control and reduce the brightness of lights in a space. They work by varying the voltage and current supplied to the light fixture, allowing users to set their preferred level of illumination. This functionality is particularly useful for creating different atmospheres, saving energy, and extending the lifespan of light bulbs.

In contrast, occupancy sensors automatically turn lights on or off based on the presence or absence of people in a room but do not adjust brightness levels. Light switches are mainly used to toggle lights on or off without any feature for dimming, while timers are designed to manage when the lights turn on or off but again do not provide a dimming capability. Thus, the unique function of a dimmer makes it the ideal choice for adjusting light intensity.