O wow! I did not expect it to be that good for the price paid for. Have it for 1.5 years now and super happy with it. Very easy to install, quality of materials so far spot on. Can withstand flock of 40 hungry chickens ramming into it at morning.
Minuses: Batery indicator not accurate enough. Had my batteries failing to power the motor at 90% charge resulting in my coop being left open one night. It would be nice if vevor could do something about it. Untill then I recommend to replace 3xAA batteries every 4 months the latest.
As well, the sprocket should have a factory set point of some sort. Otherwise its quite a fiddle to alighn it with cutouts on the flap.
Would I buy again? For this price sure