HDM2 enables full-lifecycle management and monitoring of equipment deployment, operation and maintenance(O&M), energy conservation, diagnosis, and retirement. Its original Temperature Ocean technology uses 3D color expression to show temperature-sensing data visually, facilitating rapid fault location and independent analysis. Its newly-added Fault QR Code allows the O&M personnel to scan to get relevant videos that can aid them in repairing faults. Combined with the highly graphical information-display interface design, it offers a smarter, safer, and more efficient maintenance experience.