Super secure lock, I used it on an outwards opening door with a custom slam plate.. It feels strong.. The night latch and the yale keyless entry system looks shiny and really nice.. It has some weight to it when you take it out the box which is reassuring. The instructions are easy enough to follow and there is a YouTube video you can search for made by yale to help with the installation if you are just doing it as DIY like me, The beeping can be turned down or off all together if you don't like it... The settings are super easy to learn and understand so you won't need to spend time looking at the instructions every time you want to change something/add a new password or RFID tag... The internal socket allows you to add a module to the system.. Yale have their own ones for the yale security system and the car style key fob... But there's also the 3rd party compatible Z-wave module which I use with a smart things hub for easy unlocking from anywhere in the notifications on my phone.. I use the included RFID keyring on my own set of keys.. The RFID card for friends/family and a sold seperately sticky tag which I have on my phone and if all else fails I even have a pass code! and a spare 9V battery incase the 4XAA's fail.. :D. I highly recommend this lock for any door even if its a weird door like mine that opens outwards. On a side note The night latch also comes with the keys and the key lock which you can keep as a spare incase you need it for any other door that doesn't have a smart lock or whatever.