What device is used for turning light off late at night?

The device typically used for turning lights off late at night is a time clock. This device is designed to enable automated control of lighting based on a predetermined schedule. By setting specific times for the lights to turn on and off, users can ensure that lights are turned off at night without the need for manual intervention. This is particularly useful in commercial and residential settings for energy efficiency and convenience, as it helps to adhere to a consistent lighting routine.

While occupancy sensors are designed to detect movement and can turn lights off when an area is unoccupied, they may not specifically target a nighttime schedule. Smart dimmers allow for control over light intensity and can be programmed for schedules, but their primary function is not to turn lights off at a specific time. The term "Channel" is not relevant in this context as it does not describe a device used for controlling light in the same manner as the options listed.