Material: Metal, electric part. The metal case helps prevent short circuits. Convenience: No soldering required. Connector: DB9 connector for RS232/RS485 COM port plug. Size and weight: 48 x 34 x 20 mm (L x W x H). Weight: 28 g. Key benefits Robust protection: metal case provides shielding and helps prevent short circuits for DB9 RS232/RS485 connections. Easy installation: no soldering needed, simplifying setup and maintenance. Compact and lightweight: small form factor (48 x 34 x 20 mm) and 28 g weight fit in tight spaces. Broad compatibility: designed for standard DB9 COM port connectors for RS232/RS485. Use scenarios Benchtop electronics projects: shielded enclosure for a DB9 RS232/RS485 connection to improve durability and safety in a hobby or prototype setup. Field installations: compact, solder solution for equipment that uses RS232/RS485 COM ports, where space is limited and quick assembly is important. Industrial retrofits: fits DB9 RS232/RS485 interfaces in existing equipment, providing shortcircuit protection and an easy upgrade path.