Ever left and forgot the AC on? And for how long? At least on return the space was nice and cool! Aside from being able to turn off the Smart Home Air Condition automatically when you leave with the Master-Off, it is important to be able to turn it on before you return. So the space will already be pre-cooled prior to your arrival. The Air Condition can even be controlled with presence detection and motion detectors. Energy savings can be achieved not only with presence detection but also by using window contact sensors and door opening detectors to switch off the AC if the window is not closed after a pre-defined delay time.