Swing Door Opener
I found this geek Swing Door Opener on Smarthome.com. It allows to remotely open and close doors. It’s cool if have parties often or you have a pet and don’t have a special exit for it.
The door can still be opened or closed manually during power failure which is very helpful. Also, there is a built-in obstacle detection system. This means that if an obstacle is detected in the path of an opening or closing door, the door opener will stop to avoid serious injury. Other useful feature is a timer. You can set it to close the door after specified delay.
The price of this wonder of engineering is US$324.99. You should decide by yourseld is it expensive or
not.