Not many auto door openers can open sideways. Easy install, looks sturdy but I have no clue how long it will last. It can work on light or on set time to open/close.
The Chickencozy can only be bought online and took about 10 days to arrive. The factory didn’t respond when I had a question. Its less expensive than the Omlet door.
I also have a Chickenguard, for 9 years now. It still works, but malfunctioned a few times over the years. I installed it under a roof that leaked at some point and the thread got wet. Had to rewind the thread a few times. Needed to shorten the thread once. Compared to the Chickencozy it was much more complicated to install.