Have a panasonic split air system for my condo...it works great. Howevever we also rent it out for others and want a way to have the system shut down after the condo has been vacated for more than 5-10 minutes to avoid constly energy bills....this could be with timer switch, e.g. 6 hour dial, or other more sophisticaed sensors and controls like they use in some hotel rooms...when the door opens the system shuts down, or the patio door open will not let the air unit run....

any help would be most appreciated