The NU30039L provides IP-based monitoring and outlet control with quick access to real-time outlet-level power metrics and environmental sensor data. Using Visible Light Communication (VLC) technology, NU30039L optically transmits power usage data from its LED display to a handheld device using the Geist Mobile App, presenting comprehensive power usage data down to the phase and circuit levels. With the Geist Upgradeable hot-swap technology, users may easily upgrade PDUs to the latest available technology by replacing the Interchangeable Monitoring Device (IMD) module.