IHM400B high-voltage intelligent control device, the product function is powerful, used in 3KV-35KV indoor switch cabinets, center cabinets, handcar cabinets, fixed cabinets, ring network cabinets and other types of switch cabinets, with dynamic one-time simulation map, high voltage live display, automatic heating and humidification data display and control, circuit breaker separation and combination status indication, storage indication, ground switch status indication, car position indication, separation and combination circuit integrity indication, human body sensing and cabinet lighting, voice error warning and other functions, which can replace the existing one-time circuit simulation diagram, live display, automatic heating and humidification control, circuit breaker separation and combination buttons. And it has RS485 communication interface, which can make the switch cabinet more intelligent, networked and digitized, and convenient for the general user to use and operate.