T3478118U is a circular DIN connector from Amphenol's signalmate® C091 (M16 Size) family of industrial connectors and cable assemblies. The connector is part of a modular series available in multiple configurations (M16 A, M16 B, M16 D, M16 D+, and M16 Q variants) with various coupling options including threaded, bayonet, and quicklock mechanisms. While specific configuration details for this SKU are not explicitly identified in the available documentation, the C091 family offers environmental protection up to IP69K when mated, compact design with excellent EMI shielding capability, and operates across diverse temperature ranges from -40°C to +100°C. These connectors are designed for applications in measuring instruments, equipment, and 4G/5G mobile radio networks, providing reliable power and signal connections in demanding industrial environments.