Ns2u, a building energy-management system from NS Tech., integrates hardware and software to enable users to access and control electronic sensors, devices, and machines over multiple industry protocols. The system is available for buildings of all sizes and designed to provide a return on investment in two years or fewer. Built on a real-time Java platform, it is composed of two parts: hardware with three options, each providing a different level of storage, and a browser-based GUI, which is Java enabled, Web based, and designed to allow users to control any device remotely.