The HYSF SFCXIL4F is an ultra-small 4-core female inline watertight connector optimised for mating in the tightest subsea environments with right-angle bulkheads and high-density multi-channel needs. Perfect for compact ROV thrusters, AUV control systems, underwater multi-sensor setups, and marine instrumentation requiring minimal size waterproof connections. Built with premium materials, gold-plated contacts, and ultra-miniature design, it ensures IP68 waterproofing and 60 MPa pressure resistance (6000 m depth). Excellent performance and corrosion protection establish it as the industry standard for ultra-small underwater connectors and deep-sea compact solutions from China manufacturer HYSF.