SmartLock GFCI duplex receptacle with matching buttons and indicator light does not include wall plate. Can be wired to protect all receptacles downstream on the same circuit. Terminal screw wiring can be back and side wired. Compact design with rounded corners fits easily in all surface or flush boxes, only 1-1/8" deep. Impact-resistant thermoplastic cover and body. Silver alloy terminal contacts. Complies with UL 2006 GFCI requirements. UL Standard 943, Class A (GFCI); and UL Standard 498 (receptacles). 20A/125V. NEMA 5-20R. 1 per box. Rack pack.