I would give it six stars if I could! What a wonderful little motor! Some things to note:
1) Super quiet
2) Very strong
3) Easy to install
4) I had no problems with instructions, they are not IKEA style, but if you read thoroughly they are enough.
5) The chain that comes with it is easy.
6) Took about 5-6 hours total to complete the project
7) We drilled holes in cement and inserted cement anchors and this works like a charm. Super strong.
8) Remotes work from really far away.
9) My gate is on an incline but it works perfectly anyways!