The YHK-8000 is a new-generation intelligent control device for medium and low voltage switchgear. It integrates circuit-breaker state simulation, handcart position indication, energy-storage / opening-closing operation, and built-in online temperature monitoring of key contacts (up to 12 points). A wide supply range (85–265V AC/DC) makes it adaptable to most cabinet types, and RS485 communication supports digital substations.