APC Metered Rack Power Distribution Units (PDUs) provide active metering to enable energy optimization & circuit protection. User-defined alarm thresholds mitigate risk with real-time local & remote alerts to warn of potential circuit overloads. Metered Rack PDUs provide power utilization data to allow data center managers to make informed decisions on load balancing & right sizing IT environments to lower total cost of ownership. Metered Rack PDUs include real power monitoring, a temperature/humidity sensor port, locking IEC receptacles, and ultra low profile circuit breakers. Users can access & configure Metered Rack PDUs through secure web, SNMP, or telnet interfaces which are complimented by APC centralized management platforms using Infra Struxure central, operations, capacity, and energy efficiency.