Energex develops sensor-based HVAC and lighting energy management applications for hotels, residences and office buildings. Using passive infrared occupancy sensing with logic-control software, the system switches to conservation mode when no occupancy is detected for a pre-programmed period. Alterations in room temperature and lighting lead to a reduction in energy consumption, lowering equipment wear and tear, and decreasing utility bills. Upon re-occupancy of the room, lighting and room temperature are restored. The system has the capability to expand to a centralized energy use monitoring application. HVAC and lighting cost and consumption may be reduced by as much as 45%. The Energex systems are used in over 14 countries and have been approved by major North American utility companies.