Pass & Seymour Tamper-Resistant Duplex Receptacles with USB Charging capabilities are designed with strength and durability in mind. They were designed for the commercial market, and are capable of withstanding heavy use due to their UL Fed Spec certification. This product features an an improved overall 3.1A USB charging output with current sharing technology, auto-ground clips, zinc-plated ground terminal screw, as well as triple-wipe brass contacts for lasting retention. The posted terminal screws and external pressure plates allow for faster, easier, and more reliable back & side-wire terminations.