Soltactic’s patented technology, The HOSS, is a dynamic system that modulates the amount of daylight and solar heat through building windows and skylights with the use of a slatted device. The slats are automatically adjusted every five minutes during daylight hours by the unique photovoltaic controller. At sunset the controller senses an absence of daylight and closes the slats for the night period. At sunrise, the slats are opened and regulated throughout the day. This ensures optimum performance for varying sky conditions and seasons.