Used: Waterproof RJ45 coupler connects two Ethernet cables to extend, which is very suitable for outdoor, courtyard, etc. to achieve dustproof and waterproof effect. Simple to use, just follow the installation steps to connect correctly without any auxiliary tools. Waterproof and dustproof, IP 68 Compliant. Note: The orange waterproof rubber ring cannot be lost. For better waterproof effect, please do not erect the product when using it outdoors. RJ45 coupler female to female compatible with Cat5/Cat5e/Cat6 Ethernet cable. Widely Used: Great suitable for Outdoor equipment, IP security cameras, industrial applications, printers, PC, routers, switch boxes, network media players, Gaming, POE device.