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Smartbus SB-Connect-4D Connector for Professional AV Installers The Smartbus SB-Connect-4D is a durable connector designed for professional AV installers to ensure continuous system functionality during the replacement of key components such as 9in1, DDP, or wall switches. Its robust and user-friendly design guarantees seamless connectivity in Smart-BUS G4 AV systems, making installation and upgrades straightforward. Key Features Specifically designed for professional AV installers Maintains uninterrupted system operation during component replacement Compatible with multiple Smart-BUS components including 9in1, DDP, and wall switches Robust construction for reliable, long-lasting performance Easy to install, ideal for system upgrades and replacements