The ILLUMRA Thermostat allows quick and easy implementation of energy saving HVAC controls without running any new wire. The thermostat wirelessly communicates with ILLUMRA transmitters and receivers such as occupancy sensors, Hotel Keycard Access Switches, Wireless Room Temperature Sensors, and more. When the thermostat receives an "occupied" signal, it adjusts temperature set points to a narrow preset range (i.e. 69-71 degrees Fahrenheit). When the thermostat receives an "unoccupied" signal, it adjusts temperature set points to a wider range (i.e. 59 - 81 degrees Fahrenheit). When used with an EnOcean BMS Gateway, the thermostat can be connected to LON and BACNet HVAC control systems.