The Ceiling Mounted High Bay Occupancy Sensor enables a new level of energy saving control for warehouses, garages, factories, and other indoor high bay lighting applications up to 30 feet installation height. The occupancy sensor uses radio frequency technology to communicate wirelessly with other EnOcean-enabled devices to set back temperature and turn off lights and electrical loads when a space has been unoccupied for a period of time. Because the sensors are wireless there is no need to run additional wiring and installation can be completed in a matter of minutes. The sensor is self-powered by harvesting energy from indoor light, eliminating the need for periodic battery changes.