Ensures optimal safety: outlet self-tests every 3 seconds, ensuring it's always ready to protect. Hidden tamper-resistant shutters protect against electric shock Thinner profile than the competition: Legrand GFCIs leave more room for wires in your electrical box for easier installation Weather resistant: designed for use outdoors or in wet and Damp locations Faster & more reliable connection: enhanced design features external pressure plates; enhanced back body and posted Terminal screws make wiring easy Seamlessly complete your project or remodel: matches other radiant devices and screwless wall plates by Legrand - pass & Seymour. Total Outlet: 2