Question

a device used for automatic switching and control of light based on ambient light can be

Answer 1

A device used for automatic switching and control of light based on ambient light can be called an automated lighting control.

These controls play a great role in operating cost savings by dimming or switching the lights in a room depending on factors such as time of the day, occupancy, daylight available, current light output from lighting sources and many more. They can cut down lighting energy consumption by 50 percent in existing buildings and by 30 percent in their new counterparts.