THIS CAN RUN ON BATTERIES. I emphasize this because the mention of the batteries is sort of buried.

Pleased so far. Steel body with a painted (powder coated?) aluminum door that is secured very well on all sides when closed. I got the classic version which doesn't include the remote or solar panel/battery, so I'm really glad it used batteries because I didn't notice that until later.

It does come with a 5v power adapter for the barrel jack port, but who really wants to hard wire AC mains voltage to your chicken coop. I don't feel like having an extension cord through my yard all year.

My plan is to get one of the USB battery packs with a built in solar panel and make a USB A-to-Barrel-jack cable in the event the batteries don't last long. But the batteries really should last quite a while, especially if you change the "Motor Time" to about 8 or 9 seconds which is sufficient to open and close it fully, but not keep the motor pushing after it's hit its limits (it came pre-programmed with 11 seconds).

I may decide to modify this with an EPS32 or Arduino and give it features like wireless notifications when it open and closes, or light sensitivity, but I'm in no hurry to add another project to my pile. :)

One feature I would have liked is a little chime that the hens could learn means that the door is closing soon. Right now I just need to set it late enough that they head to bed on their own. Eh, another idea for the Arduino mod.

Oh, the servo motor is a pretty standard issue motor, so if it burns out at some point (which seems to be what goes first on most of these auto-doors) it's simple to replace. You'd just need to move the motor connector to the new motor most likely.