Great question, Daferby! The SmartThings Outlet is a ZigBee device, and does work as a ZigBee repeater. The SmartThings Smart Plug connects via a 2.4 GHz WiFi connection and is not a ZigBee device or ZigBee repeater. Both devices have a power meter within the SmartThings App, and the Smart Plug can also track energy consumption. While the SmartThings Outlet requires the SmartThings Hub, the SmartThings Smart Plug simply requires a compatible WiFi network and a compatible device running the new SmartThings App. If you have additional questions, or need assistance, please reach out to our dedicated SmartThings team at 1-866-813-2404 or support@smartthings.com. Thank you! ~Samsung Brand Ambassador