Daylight Harvesting is an advanced lighting control strategy used to minimize ongoing owner energy costs. It uses daylight to offset the amount of electric lighting needed to properly light a space, in order to reduce energy consumption. This is accomplished using lighting control systems that are able to dim or switch electric lighting in response to changing daylight availability. Occupancy Sensors provide automatic ON/OFF switching of lighting loads to enhance convenience, security and long-term energy savings. Daylight sensors are battery-powered sensors that save energy by dimming or turning off electric lighting when sufficient daylight is available. Spaces with skylights and corridors, private offices and open cubicles near windows-particularly those with task lighting-are good candidates for daylight harvesting. If the entire space is uniformly skylighted, energy savings can accrue on the entire lighting load.