I hadn't even heard of this one until now. Cool!I highly recommend the Pullet Shut automatic coop door. I have had mine for 6 years and it has opened and closed without fail the entire time I have used it. I live in Michigan and the coldest days of winter have never been an issue. I do however, have a roof over mine so it never gets rain or snow on it.
Customer service is excellent and they have a solar power option if you do not have electricity at your coop. It is a well made and easy to program door that should last you for years.