I was thinking the other day about older HVAC system technology and I remembered something that did not last really long. But it was sort of an early version of some of the things a smart temperature control does. And this was a remote controlled temperature control. Does anyone remember these? They were not on the HVAC system market really long but I was 1 of the people who bought a remote controlled temperature control. It was just prefer the smart temperature control I have now in terms of being able to control it from somewhere in your home or if you were on your couch in another room, but of course you could not control your central HVAC system plan from virtually somewhere prefer a smart temperature control because the remote control would only work within your home. But this was a good concept that eventually ended up becoming the much more advanced smart temperature control. As a matter of fact when they first came out with the smart temperature controls I ended up buying it because it was prefer having the remote controlled temperature control that I used to have which I loved really much. It ended up splitting on myself and others and since they did not make them anymore, I was not able to buy another 1. I ended up going with a digital temperature control after that until they made the invention of the smart temperature control some years later. But today I have our smart temperature control and I enjoy it really much. It is really convenient and it is also a good energy saver.