The key benefits of the Amphe-Lite Series include: Quick/durable coupling utilizing Tri-start acme threads. Rigid dielectric insert with excellent electrical characteristics. Light-weight composite material 100% scoop proof. Effective EMI Shielding with grounding through Electroless nickel plating and spring grounding rings. Improved sealing by using interfacial seals to prevent contact corrosion. Standard shell styles include wall mount receptacle, jam nut receptacle, and straight plug. UL Recognition (File #: E115497), and has an ingress protection rating of IP67.