Plug the Tunze Controlled Power Socket 7070.120 into any wall outlet and then connect the control cables to your Tunze Smart Controller 7000 to create a full blown aquarium controller. Manage your tanks heater, CO2 system, lights, and much more. Each Power Socket comes with the control cable that has a Y-adapter already built in letting you run more Tunze lights, or pumps without requiring additional control ports on the controller.