Honestly i was a little iffy but this thing is awesome to set up for it was so easy to do, you can set up to 20 fingerprints, and like i said all it took was about a minute total couldn't be happier with this purchase i highly recommend buying.
Cool on all levels!! Smells good throughout the space and is really high quality. The smoke coming out of it is not as described and that's the only thing that bothers me.
For a small room it works, but not for a larger one since I don't feel that the smell of the oil is noticeable.
read the instructions for use very carefully do not make a mistake. otherwise the lock will no longer work, and it cannot be restored if you have closed it. the store that sells the product is good.