This is a great automatic chicken coop door. It is very reliable. The only thing I need to address is on cold nights in MN, the following morning the door tends to stay closed because any moisture that was in the door or opening mechanism froze it shut. But all I have to to is go out and push the button and it will manually open. Other that that, it works great all the time! Opens and closes automatically every morning and evening. I'm happy with this purchase!