These durable, dependable receptacles feature a permanently marked, differentiated solution that meets all necessary code requirements. The controlled receptacle marking printed on the face of the receptacle is both NEMA approved and compliant with the National Electrical CodeĀ®, CA Title 24, and ASHRAE Energy Efficiency Standard 90.1. This clear, permanent marking helps end-users differentiate controlled receptacles from others. Corrosion-resistant plated steel straps and high-strength nylon faces make these receptacles perfect for any hard use application. They feature one-piece, triple-wipe brass contacts for lasting retention. And screw-pressure-plate back wiring makes installation fast and easy.