The single-phase DPDUV3 AC PDU intelligent meter is based on the innovative SUM (Sustainable, upgradable and maintainable) design concept technology. As a key component of the metered cabinet distribution unit (PDU), it can provide active metering function after loading into the PDU body to achieve energy optimization and circuit protection. User-set alarm thresholds can effectively reduce risks by alerting potential circuit overloads through real-time local and remote alarms. Metered rack PDUs provide power usage data to enable data center managers to make informed decisions about load balancing and appropriate IT scale, significantly reducing total cost of ownership. Users can configure metering cabinet PDUs over Ethernet or RS485. This series of products can be widely used in IDC, banks, securities, government, enterprises and other data center room.