This type of heliostat was used for daylighting prior to the availability of cheap computers, but after the initial availability of sensor control hardware.

Screen brightness can be adjusted to suit the room, and a built-in light sensor controls the backlight, which helps save some energy.

New on this generation were some advanced options such as rain sensor controlled windshield wipers and automatic climate control.

For example, an occupancy sensor controlling lights in an office should not detect motion in the corridor outside the office.

This sensor controls the flash.