The Amphenol RJ Field series connectors are circular metal connectors designed for Ethernet Class D / CAT5e connections, suitable for Ethernet over twisted-pair networks in harsh environments. They feature a tri-start threading coupling system and an RJStop® connection system that provides protection against shock, dust, and fluids. RoHS-compliant options are available. These connectors eliminate the need for hazardous field cabling and grounding, making them ideal for challenging conditions.