The ABB Symphony Plus HN800 Bus Extender, designated as Vertical Bottom (VBX01B), is an essential component designed to enhance the flexibility and scalability of the Symphony Plus control system. This module facilitates the extension of communication distances within the system architecture, ensuring seamless integration and reliable data transmission between distributed control components. Its vertical mounting configuration optimizes space utilization in control cabinets while maintaining robust performance in demanding industrial environments. The HN800 Bus Extender supports a variety of communication protocols, enabling efficient connectivity with other Symphony Plus modules and devices. This product is engineered for superior durability and operational efficiency, making it an integral part of sophisticated automation solutions.