REVO RJ45 Female to Female Waterproof Coupler (4-pack) is ideal for extending the connection between two CAT5e/CAT6 network cables that are placed outdoors. This RJ45 coupler is engineered cables that are placed outdoors. This RJ45 coupler is engineered to bring high performance in a compact design. The sealed waterproof connectors prevents water intrusion. It's great for use in wet environment.