APC Metered Rack Power Distribution Units (PDUs) provide active metering to enable energy optimization and circuit protection. Metered Rack PDUs include threshold alarms. real power monitoring. a temperature/humidity sensor port. locking IEC receptacles. and ultra low profile circuit breakers. Users can access and configure Metered Rack PDUs through secure Web. SNMP. or Telnet Interfaces which are complimented by APC Centralized Management platforms using InfraStruxure Central. Operations. Capacity. and Energy Efficiency.