Lutron's Radio Frequency enabled Radio Window sensor enhances the performance of Lutron® shading systems by working at the window level to communicate current exterior light conditions to the system. This enables shades to respond appropriately, improve comfort, and enhance the system's energy saving potential. The sensor maximizes natural daylight, available views, and occupant comfort when shadows are cast as well as when dark cloudy or bright sunny weather conditions prevail. The battery powered sensor features easy installation and low maintenance costs.