Works great but I have dogs and they let me know someone is here before they are really even here. Plug in and it’s ready to go. The button part has yellowed from being out in the weather but it works just fine. There are 8 (I think) different chimes and since I don’t have the directions they can be found online to change the chime. Button can be attached to the wall with double sided tape. It has batteries in it but I don’t know how long they will last.

* Porch pick up ~ Hospital area *