Z wave controller is the 'Brain' of a Z-Wave network. The controller connects all z-wave devices installed in your home and gives you the capability to control them over your 'Smartphone', 'Computer' or 'Tablet'. The Z-wave controller can also automate the appliances through time-based 'Scenes' or can be triggered by 'Sensors'.
Z wave controllers are permanently online but only take a minimum of energy for operations. The controller when hooked up to the internet through router, gives you the capability to control your device from 'Anywhere in the World'!!