EZ1156 Inline Meters Single Input 16A 3ph available with dual input as an option. The EZ1000 Series Inline Energy Meter quickly and effectively upgrades a basic PDU or stand-alone equipment with watt-hour energy metering, real-time power monitoring and network alarms, with comprehensive environmental management capability. Simply install the inline meter between the main incoming power connection and the PDU or stand-alone equipment to add state-of-the-art energy management capability to your legacy installation.