The Sentry CS-6HD/HY products provide a NEMA locking outlet solution for high-density applications found in data center cabinets. Smart Cabinet Distribution Units (CDU) provide reliable three-phase power distribution combined with local and remote power monitoring and environmental monitoring via IP. Use the network interface to view power, temperature, and humidity levels via a web browser, or receive SNMP-based alarms and email alerts when conditions exceed defined thresholds. Digital True RMS current monitoring is provided and critical to preventing overloads in high-density computing environments. Increasing power demands and density in the equipment cabinet requires new functionality from a cabinet rack PDU. The Sentry cabinet PDU product family uniquely meets these demands. The Sentry Cabinet Power Distribution Unit (CDU) is an intelligent PDU with local LED input current monitoring, allowing network engineers to utilize the Cabinet PDUs True RMS Power Monitor to precisely measure the current (in amps) that network devices are drawing on the power circuit. As new equipment units are added to the power drop, immediately observe its impact on the cumulative current draw. This allows the engineer to safely load each circuit to its maximum allowable load capacity without the danger of overloading the power circuit.